An exception

blender 3.3.4
game rig latest 
Reproduce the exception：
1 Select metarig
2 Ctrl s save the file
3 Press H to hide the metarig
And then it thrown an exception:
<img width="1913" alt="Snipaste_2023-03-10_16-42-02" src="https://user-images.githubusercontent.com/112866800/224270588-d0730350-fe61-4433-bd1c-938203d6ec98.png">
