AttributeError: 'Namespace' object has no attribute 'controlnet_preprocessor_cache_size'

[upColor]

Hi, it is my first time to use stable diffusion. After installing it with the help from Anaconda, I meet an error when installing ControlNet. After clicking "Apply and Restart UI", here is what I get:

Any ideal how to fix this please? Thanks!

[upColor]

'Namespace' object has no attribute 'controlnet_preprocessor_cache_size'

When this error occurs, restarting stable diffusion quits. So I have to type in the Anaconda Prompt:
python launch.py --xformers --autolaunch --medvram

And here is what happens, after launching stable diffusion webui again: