What is this error - 'An existing connection was forcibly closed by the remote host'. Faced while placing a market order.

projectSB

I got the following error while my algo was running fine today:

2025-07-29 13:33:08,801 ('Connection aborted.', ConnectionResetError(10054, 'An existing connection was forcibly closed by the remote host', None, 10054, None))

The API request was for Placing a market order to exit an existing position.

Details:
"instrument": "NIFTY31JUL2524700PE"

Note that the system was fine from the morning, and was executing orders as well.

Need your help ASAP, other wise my system won't run tomorrow and Angel will lose revenue

Thanks
-Sid