Hi,
It seems that the machine doesn't have access to internet, or is unable to connect to pypi.org (firewall? proxy?), or has a local python repo configured.
Can you please try to run `wget https://files.pythonhosted.org/packages/da/a1/122fe7135f4fbf57eb723f4e4604fa645d1884f722e15db1c36e560a1593/container_service_extension-3.0.0-py3-none-any.whl` and see if you can download the CSE binary or not? If yes, you can install the binary by invoking `pip3.7 install --user container_service_extension-3.0.0-py3-none-any.whl`
Regards
Aritra Sen
