Fail to render: sawyer robot has blank screen

[spacegoing]

I had a fresh install of this repo and tried rendering Sawyer robot with:

https://github.com/ARISE-Initiative/robosuite/blob/master/robosuite/demos/demo_renderers.py and https://github.com/ARISE-Initiative/robosuite/blob/master/robosuite/demos/demo_video_recording.py

All these scripts failed to render sawyer robot.

I tried https://github.com/ARISE-Initiative/robosuite/blob/master/robosuite/demos/demo_renderers.py and https://github.com/ARISE-Initiative/robosuite/blob/master/robosuite/demos/demo_video_recording.py with the other robots. All robots and scenes work, except for Sawyer robot didn't work for any scenes.