ConnectionError on poetry add

Question

I'd like to add SendGrid package using poetry. I do so using:

poetry add sendgrid

I then get the following error:

 ConnectionError

  HTTPConnectionPool(host='192.168.30.7', port=8080): Max retries exceeded with url: /sendgrid/ (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x000001FF281963D0>: Failed to establish a new connection: [WinError 10060] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond'))

  at c:\python38\lib\site-packages\requests\adapters.py:516 in send
      512│             if isinstance(e.reason, _SSLError):
      513│                 # This branch is for urllib3 v1.22 and later.
      514│                 raise SSLError(e, request=request)
      515│
    → 516│             raise ConnectionError(e, request=request)
      517│
      518│         except ClosedPoolError as e:
      519│             raise ConnectionError(e, request=request)
      520│

But if I do pip install poetry, it works without any problem.

What could be the issue with the poetry installation?