Unhandled exception while removing a project with a subdir locally on Windows 10

[erpas]

Reproduce:

1. Download a project WITH a subdir
2. Open the project subdirectory in the Explorer.
3. Try to delete the project locally and you get:

Closing the Explorer doesn't help.

Restarting QGIS and removing locally the project will give you an unhandled exception:

The content of the directory IS deleted anyway, so I would just add another option with OSError to the exception handler on line 155 plugin.py:

except OSError:
    pass

[erpas]

This was already solved by using shutil and handling its exception for insufficient permissions.
Also log file handler is properly removed now which was a problem too.