Error during installation with pip - terracatalogueclient

Hi everyone, I've used terracatalogueclient so far and have never experienced any issues. I've used it in my dockerized app and my Dockerfile looks like this: RUN pip install --extra-index-url https://artifactory.vgt.vito.be/api/pypi/python-packages/simple terracatalogueclient as specified in the official Github documentation. But for some reason this is no more working. Does anyone know why? Thank you. 
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