System Information
Operating system: Windows 10
Graphics card:

Blender Version
Broken:
(example: 2.79b release)
(example: 2.80, edbf15d3c044, blender2.8, 2018-11-28, as found on the splash screen)
Worked: (optional)

Short description of error
Go to import Brush set or even one brush to no joy have even renamed brush files so no spaces.

Exact steps for others to reproduce the error

Based on the default startup or an attached .blend file (as simple as possible).
Python: Traceback (most recent call last):

File "C:\Program Files\Blender Foundation\Blender 2.93\2.93\scripts\addons\io_import_BrushSet.py", line 121, in execute
  LoadBrushSet(self.properties.filepath, self.properties.filename)
File "C:\Program Files\Blender Foundation\Blender 2.93\2.93\scripts\addons\io_import_BrushSet.py", line 70, in LoadBrushSet
  for file in os.listdir(filepath):

NotADirectoryError: [WinError 267] The directory name is invalid: 'E:\\MaskTools\\Mask Tools 1.6\\Brushes\\Brush 3.png'

location: <unknown location>:-1