Python: Traceback (most recent call last):


 "C:\Users\John\AppData\Roaming\Blender Foundation\Blender\2.92\scripts\addons\ZenUV\operators\operators.py", line 867, in execute

if checker_setup.switch_checker(obj):


 "C:\Users\John\AppData\Roaming\Blender Foundation\Blender\2.92\scripts\addons\ZenUV\utils\checker_setup.py", line 97, in switch_checker

if mat.use_nodes:
AttributeError: 'NoneType' object has no attribute 'use_nodes'

Traceback (most recent call last):


 "/usr/lib/python3.6/site-packages/qutebrowser/utils/objreg.py", line 200, in _get_window_registry

return win.registry
AttributeError: 'NoneType' object has no attribute 'registry'
