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I tried to export a fbx. and this error kept showing up....can anybody can help me? \ Traceback (most recent call last): File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\__init__.py", line 620, in execute return export_fbx_bin.save(self, context, **keywords) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 3083, in save ret = save_single(operator, context.scene, filepath, **kwargs_mod) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2990, in save_single fbx_objects_elements(root, scene_data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2789, in fbx_objects_elements fbx_data_mesh_elements(objects, me_obj, scene_data, done_meshes) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in fbx_data_mesh_elements elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 498, in elem_data_single_int32_array return _elem_data_single(elem, name, value, "add_int32_array") File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 445, in _elem_data_single getattr(sub_elem, func_name)(value) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\encode_bin.py", line 161, in add_int32_array data = array.array(data_types.ARRAY_INT32, data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in <genexpr> elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) KeyError: (nan, nan) location: <unknown location>:-1 bpy.ops.object.editmode_toggle() bpy.ops.object.editmode_toggle() bpy.ops.object.select_all(action='DESELECT') Traceback (most recent call last): File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\__init__.py", line 620, in execute return export_fbx_bin.save(self, context, **keywords) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 3083, in save ret = save_single(operator, context.scene, filepath, **kwargs_mod) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2990, in save_single fbx_objects_elements(root, scene_data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2789, in fbx_objects_elements fbx_data_mesh_elements(objects, me_obj, scene_data, done_meshes) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in fbx_data_mesh_elements elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 498, in elem_data_single_int32_array return _elem_data_single(elem, name, value, "add_int32_array") File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 445, in _elem_data_single getattr(sub_elem, func_name)(value) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\encode_bin.py", line 161, in add_int32_array data = array.array(data_types.ARRAY_INT32, data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in <genexpr> elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) KeyError: (nan, nan) location: <unknown location>:-1 bpy.ops.object.editmode_toggle() bpy.ops.object.editmode_toggle() Traceback (most recent call last): File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\__init__.py", line 620, in execute return export_fbx_bin.save(self, context, **keywords) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 3083, in save ret = save_single(operator, context.scene, filepath, **kwargs_mod) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2990, in save_single fbx_objects_elements(root, scene_data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2789, in fbx_objects_elements fbx_data_mesh_elements(objects, me_obj, scene_data, done_meshes) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in fbx_data_mesh_elements elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 498, in elem_data_single_int32_array return _elem_data_single(elem, name, value, "add_int32_array") File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 445, in _elem_data_single getattr(sub_elem, func_name)(value) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\encode_bin.py", line 161, in add_int32_array data = array.array(data_types.ARRAY_INT32, data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in <genexpr> elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) KeyError: (nan, nan) location: <unknown location>:-1 Traceback (most recent call last): File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\__init__.py", line 620, in execute return export_fbx_bin.save(self, context, **keywords) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 3083, in save ret = save_single(operator, context.scene, filepath, **kwargs_mod) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2990, in save_single fbx_objects_elements(root, scene_data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2789, in fbx_objects_elements fbx_data_mesh_elements(objects, me_obj, scene_data, done_meshes) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in fbx_data_mesh_elements elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 498, in elem_data_single_int32_array return _elem_data_single(elem, name, value, "add_int32_array") File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 445, in _elem_data_single getattr(sub_elem, func_name)(value) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\encode_bin.py", line 161, in add_int32_array data = array.array(data_types.ARRAY_INT32, data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in <genexpr> elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) KeyError: (nan, nan) location: <unknown location>:-1 Traceback (most recent call last): File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\__init__.py", line 620, in execute return export_fbx_bin.save(self, context, **keywords) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 3083, in save ret = save_single(operator, context.scene, filepath, **kwargs_mod) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2990, in save_single fbx_objects_elements(root, scene_data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2789, in fbx_objects_elements fbx_data_mesh_elements(objects, me_obj, scene_data, done_meshes) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in fbx_data_mesh_elements elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 498, in elem_data_single_int32_array return _elem_data_single(elem, name, value, "add_int32_array") File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 445, in _elem_data_single getattr(sub_elem, func_name)(value) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\encode_bin.py", line 161, in add_int32_array data = array.array(data_types.ARRAY_INT32, data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in <genexpr> elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) KeyError: (nan, nan) location: <unknown location>:-1 bpy.context.scene.render.use_antialiasing = False bpy.context.scene.render.use_overwrite = False bpy.context.scene.render.use_file_extension = False Traceback (most recent call last): File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\__init__.py", line 620, in execute return export_fbx_bin.save(self, context, **keywords) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 3083, in save ret = save_single(operator, context.scene, filepath, **kwargs_mod) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2990, in save_single fbx_objects_elements(root, scene_data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2789, in fbx_objects_elements fbx_data_mesh_elements(objects, me_obj, scene_data, done_meshes) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in fbx_data_mesh_elements elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 498, in elem_data_single_int32_array return _elem_data_single(elem, name, value, "add_int32_array") File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 445, in _elem_data_single getattr(sub_elem, func_name)(value) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\encode_bin.py", line 161, in add_int32_array data = array.array(data_types.ARRAY_INT32, data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in <genexpr> elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) KeyError: (nan, nan) location: <unknown location>:-1

I tried to export a fbx. and this error kept showing up....can anybody can help me? \ ```lines=20 Traceback (most recent call last): File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\__init__.py", line 620, in execute return export_fbx_bin.save(self, context, **keywords) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 3083, in save ret = save_single(operator, context.scene, filepath, **kwargs_mod) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2990, in save_single fbx_objects_elements(root, scene_data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2789, in fbx_objects_elements fbx_data_mesh_elements(objects, me_obj, scene_data, done_meshes) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in fbx_data_mesh_elements elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 498, in elem_data_single_int32_array return _elem_data_single(elem, name, value, "add_int32_array") File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 445, in _elem_data_single getattr(sub_elem, func_name)(value) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\encode_bin.py", line 161, in add_int32_array data = array.array(data_types.ARRAY_INT32, data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in <genexpr> elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) KeyError: (nan, nan) location: <unknown location>:-1 bpy.ops.object.editmode_toggle() bpy.ops.object.editmode_toggle() bpy.ops.object.select_all(action='DESELECT') Traceback (most recent call last): File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\__init__.py", line 620, in execute return export_fbx_bin.save(self, context, **keywords) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 3083, in save ret = save_single(operator, context.scene, filepath, **kwargs_mod) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2990, in save_single fbx_objects_elements(root, scene_data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2789, in fbx_objects_elements fbx_data_mesh_elements(objects, me_obj, scene_data, done_meshes) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in fbx_data_mesh_elements elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 498, in elem_data_single_int32_array return _elem_data_single(elem, name, value, "add_int32_array") File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 445, in _elem_data_single getattr(sub_elem, func_name)(value) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\encode_bin.py", line 161, in add_int32_array data = array.array(data_types.ARRAY_INT32, data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in <genexpr> elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) KeyError: (nan, nan) location: <unknown location>:-1 bpy.ops.object.editmode_toggle() bpy.ops.object.editmode_toggle() Traceback (most recent call last): File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\__init__.py", line 620, in execute return export_fbx_bin.save(self, context, **keywords) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 3083, in save ret = save_single(operator, context.scene, filepath, **kwargs_mod) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2990, in save_single fbx_objects_elements(root, scene_data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2789, in fbx_objects_elements fbx_data_mesh_elements(objects, me_obj, scene_data, done_meshes) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in fbx_data_mesh_elements elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 498, in elem_data_single_int32_array return _elem_data_single(elem, name, value, "add_int32_array") File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 445, in _elem_data_single getattr(sub_elem, func_name)(value) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\encode_bin.py", line 161, in add_int32_array data = array.array(data_types.ARRAY_INT32, data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in <genexpr> elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) KeyError: (nan, nan) location: <unknown location>:-1 Traceback (most recent call last): File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\__init__.py", line 620, in execute return export_fbx_bin.save(self, context, **keywords) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 3083, in save ret = save_single(operator, context.scene, filepath, **kwargs_mod) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2990, in save_single fbx_objects_elements(root, scene_data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2789, in fbx_objects_elements fbx_data_mesh_elements(objects, me_obj, scene_data, done_meshes) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in fbx_data_mesh_elements elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 498, in elem_data_single_int32_array return _elem_data_single(elem, name, value, "add_int32_array") File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 445, in _elem_data_single getattr(sub_elem, func_name)(value) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\encode_bin.py", line 161, in add_int32_array data = array.array(data_types.ARRAY_INT32, data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in <genexpr> elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) KeyError: (nan, nan) location: <unknown location>:-1 Traceback (most recent call last): File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\__init__.py", line 620, in execute return export_fbx_bin.save(self, context, **keywords) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 3083, in save ret = save_single(operator, context.scene, filepath, **kwargs_mod) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2990, in save_single fbx_objects_elements(root, scene_data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2789, in fbx_objects_elements fbx_data_mesh_elements(objects, me_obj, scene_data, done_meshes) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in fbx_data_mesh_elements elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 498, in elem_data_single_int32_array return _elem_data_single(elem, name, value, "add_int32_array") File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 445, in _elem_data_single getattr(sub_elem, func_name)(value) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\encode_bin.py", line 161, in add_int32_array data = array.array(data_types.ARRAY_INT32, data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in <genexpr> elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) KeyError: (nan, nan) location: <unknown location>:-1 bpy.context.scene.render.use_antialiasing = False bpy.context.scene.render.use_overwrite = False bpy.context.scene.render.use_file_extension = False Traceback (most recent call last): File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\__init__.py", line 620, in execute return export_fbx_bin.save(self, context, **keywords) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 3083, in save ret = save_single(operator, context.scene, filepath, **kwargs_mod) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2990, in save_single fbx_objects_elements(root, scene_data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2789, in fbx_objects_elements fbx_data_mesh_elements(objects, me_obj, scene_data, done_meshes) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in fbx_data_mesh_elements elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 498, in elem_data_single_int32_array return _elem_data_single(elem, name, value, "add_int32_array") File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 445, in _elem_data_single getattr(sub_elem, func_name)(value) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\encode_bin.py", line 161, in add_int32_array data = array.array(data_types.ARRAY_INT32, data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in <genexpr> elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) KeyError: (nan, nan) location: <unknown location>:-1 ```

I tried to export a fbx. and this error kept showing up....can anybody can help me? \ ```lines=20 Traceback (most recent call last): File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\__init__.py", line 620, in execute return export_fbx_bin.save(self, context, **keywords) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 3083, in save ret = save_single(operator, context.scene, filepath, **kwargs_mod) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2990, in save_single fbx_objects_elements(root, scene_data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2789, in fbx_objects_elements fbx_data_mesh_elements(objects, me_obj, scene_data, done_meshes) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in fbx_data_mesh_elements elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 498, in elem_data_single_int32_array return _elem_data_single(elem, name, value, "add_int32_array") File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 445, in _elem_data_single getattr(sub_elem, func_name)(value) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\encode_bin.py", line 161, in add_int32_array data = array.array(data_types.ARRAY_INT32, data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in <genexpr> elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) KeyError: (nan, nan) location: <unknown location>:-1 bpy.ops.object.editmode_toggle() bpy.ops.object.editmode_toggle() bpy.ops.object.select_all(action='DESELECT') Traceback (most recent call last): File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\__init__.py", line 620, in execute return export_fbx_bin.save(self, context, **keywords) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 3083, in save ret = save_single(operator, context.scene, filepath, **kwargs_mod) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2990, in save_single fbx_objects_elements(root, scene_data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2789, in fbx_objects_elements fbx_data_mesh_elements(objects, me_obj, scene_data, done_meshes) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in fbx_data_mesh_elements elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 498, in elem_data_single_int32_array return _elem_data_single(elem, name, value, "add_int32_array") File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 445, in _elem_data_single getattr(sub_elem, func_name)(value) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\encode_bin.py", line 161, in add_int32_array data = array.array(data_types.ARRAY_INT32, data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in <genexpr> elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) KeyError: (nan, nan) location: <unknown location>:-1 bpy.ops.object.editmode_toggle() bpy.ops.object.editmode_toggle() Traceback (most recent call last): File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\__init__.py", line 620, in execute return export_fbx_bin.save(self, context, **keywords) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 3083, in save ret = save_single(operator, context.scene, filepath, **kwargs_mod) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2990, in save_single fbx_objects_elements(root, scene_data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2789, in fbx_objects_elements fbx_data_mesh_elements(objects, me_obj, scene_data, done_meshes) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in fbx_data_mesh_elements elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 498, in elem_data_single_int32_array return _elem_data_single(elem, name, value, "add_int32_array") File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 445, in _elem_data_single getattr(sub_elem, func_name)(value) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\encode_bin.py", line 161, in add_int32_array data = array.array(data_types.ARRAY_INT32, data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in <genexpr> elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) KeyError: (nan, nan) location: <unknown location>:-1 Traceback (most recent call last): File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\__init__.py", line 620, in execute return export_fbx_bin.save(self, context, **keywords) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 3083, in save ret = save_single(operator, context.scene, filepath, **kwargs_mod) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2990, in save_single fbx_objects_elements(root, scene_data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2789, in fbx_objects_elements fbx_data_mesh_elements(objects, me_obj, scene_data, done_meshes) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in fbx_data_mesh_elements elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 498, in elem_data_single_int32_array return _elem_data_single(elem, name, value, "add_int32_array") File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 445, in _elem_data_single getattr(sub_elem, func_name)(value) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\encode_bin.py", line 161, in add_int32_array data = array.array(data_types.ARRAY_INT32, data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in <genexpr> elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) KeyError: (nan, nan) location: <unknown location>:-1 Traceback (most recent call last): File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\__init__.py", line 620, in execute return export_fbx_bin.save(self, context, **keywords) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 3083, in save ret = save_single(operator, context.scene, filepath, **kwargs_mod) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2990, in save_single fbx_objects_elements(root, scene_data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2789, in fbx_objects_elements fbx_data_mesh_elements(objects, me_obj, scene_data, done_meshes) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in fbx_data_mesh_elements elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 498, in elem_data_single_int32_array return _elem_data_single(elem, name, value, "add_int32_array") File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 445, in _elem_data_single getattr(sub_elem, func_name)(value) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\encode_bin.py", line 161, in add_int32_array data = array.array(data_types.ARRAY_INT32, data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in <genexpr> elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) KeyError: (nan, nan) location: <unknown location>:-1 bpy.context.scene.render.use_antialiasing = False bpy.context.scene.render.use_overwrite = False bpy.context.scene.render.use_file_extension = False Traceback (most recent call last): File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\__init__.py", line 620, in execute return export_fbx_bin.save(self, context, **keywords) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 3083, in save ret = save_single(operator, context.scene, filepath, **kwargs_mod) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2990, in save_single fbx_objects_elements(root, scene_data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2789, in fbx_objects_elements fbx_data_mesh_elements(objects, me_obj, scene_data, done_meshes) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in fbx_data_mesh_elements elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 498, in elem_data_single_int32_array return _elem_data_single(elem, name, value, "add_int32_array") File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\fbx_utils.py", line 445, in _elem_data_single getattr(sub_elem, func_name)(value) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\encode_bin.py", line 161, in add_int32_array data = array.array(data_types.ARRAY_INT32, data) File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1105, in <genexpr> elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv] for uv in _uvtuples_gen(t_luv))) KeyError: (nan, nan) location: <unknown location>:-1 ```