(Opencv error) ImportError: libGL.so.1: cannot open shared object file: No such file or directory / NameError: name 'pred_mask' is not defined

[Hayoung93]

I encountered the above error and solved it by apt install libgl1-mesa-glx and apt install libglib2.0-0.

And after solving that problem, another issue arises.

Does somebody had the same issue?

(I created conda vertualenv inside of docker)

[Hayoung93]

I solved this problem via changing if pred_mask in item to if ('pred_mask' in item)