Hi,
Don't know if it will help, but I had issues with the blur brush as you all, I could make it right by changing the stroke method from space to airbrush.

It's very complicated because this error is just random, sometime it happens with the same file sometimes not. Sometimes with complicated files sometimes just with a simple one. However, it always hapen with minimum 10 min spent working on the file. This error occur both in render mode work and when I want to final render.
Yes I tried with factory settings too when I upgrated to the newest version. This happen since version 2.8 I suppose.
Did you found something in the error report ?
Could it be caused be a shader addon not loading correctly ?

@Pratik Borhade (PratikPB2123) thank you, I'll do that and get back to you as soon as I can. Have a good day.