No module named 'omegaconf'

[idesign2018]

I don't know why, but when using the AnimateDiff v3 model, I get the error: No module named 'omegaconf', and even after installing the 'omegaconf' module, I still get the same error. Terminal log:

[idesign2018]

Can't use v3 models even with the default AnimateDiff workflow