Error when TotalSegmentator trying to install required Python packages: `SSLError(SSLEOFError(8, ‘EOF occurred in violation of protocol (_ssl.c:1129)’))`

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Having uninstalled Slicer 5.6.1 and deleted the entire directory:
%LOCALAPPDATA%/slicer.org/Slicer 5.6.1

Then deleting my entire python pip cache at:
%LOCALAPPDATA%/pip

Then deleting my TotalSegmentator cache at:
%USERPROFILE%/.totalsegmentator

I reinstalled Slicer 5.6.1, installed the TotalSegmentator Slicer extension and then re-ran TotalSegmentator on the CTChest sample data set, I was successful running TotalSegmentator:

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@rnvwnvvir If you follow the same steps as I did below, you should be able to observe similar success.