Have you played any other Unity games recently?
A google search has some more things that might fix it, but I found a couple things to check:
- Some Unity games often get detected as a virus by some anti-virus software, so you could try allowing it through your anti-virus.
- Make sure none of the folders have any punctuation listed under the reserved characters section in here: https://docs.microsoft.com/en-us/windows/win32/fileio/naming-a-file#naming-conve...
- Lastly, some people recommend updating graphics drivers.
If none of those work/solve the problem, you might have better results looking online for other solutions.