TimeoutError: timed out

[sal-6]

I've configured the following in the system.txt file:

PORT CTS_API 7777
PORT TLMVIEWER_API 7778
PORT CTS_PREIDENTIFIED 7779

When the packet view is opened, values are being updated and the status tab in the command and telemetry server shows it number of requests being incremented, I assume by the packet viewer. When I attempt to perform a 'tlm' call from the python api I get the following error message:

Traceback (most recent call last):
File "C:\Users\XXX\Documents\venv\lib\site-packages\ballcosmos\connection.py", line 168, in make_request
response = self._connection.getresponse()
File "C:\Users\XXX\AppData\Local\Programs\Python\Python310\lib\http\client.py", line 1368, in getresponse
response.begin()
File "C:\Users\XXX\AppData\Local\Programs\Python\Python310\lib\http\client.py", line 317, in begin
version, status, reason = self._read_status()
File "C:\Users\XXX\AppData\Local\Programs\Python\Python310\lib\http\client.py", line 278, in _read_status
line = str(self.fp.readline(_MAXLINE + 1), "iso-8859-1")
File "C:\Users\XXX\AppData\Local\Programs\Python\Python310\lib\socket.py", line 705, in readinto
return self._sock.recv_into(b)
TimeoutError: timed out

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "C:\Users\XXX\Documents\ball_cosmos.py", line 7, in
tlm("UUT PAYLOAD LAT_DEC")
File "C:\Users\XXX\Documents\venv\lib\site-packages\ballcosmos\telemetry.py", line 27, in tlm
return ballcosmos.CTS.write("tlm", *args)
File "C:\Users\XXX\Documents\venv\lib\site-packages\ballcosmos\connection.py", line 99, in write
response = self.make_request(request, first_try)
File "C:\Users\XXX\Documents\venv\lib\site-packages\ballcosmos\connection.py", line 179, in make_request
raise ConnectionError(
ballcosmos.connection.ConnectionError: failed to make request: {'method': 'POST', 'url': '/', 'body': '{"jsonrpc": "2.0", "method": "tlm", "params": ["CUBE PAYLOAD LAT_DEC"], "id": 1}', 'headers': {'Content-Type': 'application/json-rpc', 'X_CSRF_TOKEN': 'SuperSecret'}}