SIEM API script timing out

Our SIEM stopped collecting events around 9:55am PDT today and is reporting the following:

Retrieving results starting cursor: [redactec]
URL: api5.central.sophos.com/.../events


Error "HTTP Error 504: Gateway Timeout" (code 504) on attempt #1 of 3, retrying
Error "HTTP Error 504: Gateway Timeout" (code 504) on attempt #2 of 3, retrying
Error "HTTP Error 504: Gateway Timeout" (code 504) on attempt #3 of 3, retrying
Error during request. Error code: 504, Error message: {"message": "Endpoint request timed out"}