Here is a character that I started sculpting.
After selecting the head in Object mode, I clicked on the UnRotator button and an error appeared:
Traceback (most recent call last):
File "C:\Users\Sebastien\AppData\Roaming\Blender Foundation\Blender\2.82\scripts\addons\kekit\ke_unrotator.py", line 86, in invoke
return self.execute(context)
File "C:\Users\Sebastien\AppData\Roaming\Blender Foundation\Blender\2.82\scripts\addons\kekit\ke_unrotator.py", line 336, in execute
bm.edges.ensure_lookup_table()
UnboundLocalError: local variable 'bm' referenced before assignment
location: <unknown location>:-1
It also happen if I click on UnRotator Duplicate and UnRotator RotOnly.