I am getting occasional instances where Otto Webhooks get an error of “Failed to load resource: the server responded with a status of 400()”. The Otto logs have an entry for “error BadRequestError: Error: socket hang up. code: -2 - {“service”:“express-error-handler”}”.
Any ideas what may be causing this error?
I am running OttoFMS 4.10.3 & FMS 21.1.4.400
Hey Carl,
My suspicion is that OttoFMS is trying to call the data API during the webhook and it is hanging. Do you see any errors in any of the dapi logs?
-Kyle
Hi Kyle
The only errors I see in the fmdapi log are the attempts to login with an expired token. Subsequent DAPI requests seem to complete successfully.
Otto-error:
2025-05-06T15:48:29.725Z error BadRequestError: Error: socket hang up. code: -2 - {“service”:“express-error-handler”}
fmdapi:
2025-05-06 16:47:43.834 +0100 952 ERROR POST /fmi/data/vLatest/databases/xxx.fmp12/layouts/OttoReceiver/records 92
2025-05-06 16:47:44.017 +0100 0 INFO Tabulator POST /fmi/data/vLatest/databases/xxx.fmp12/sessions 118
2025-05-06 16:48:29.781 +0100 0 INFO Tabulator POST /fmi/data/vLatest/databases/xxx.fmp12/layouts/OttoReceiver/records 1259
2025-05-06 16:48:40.578 +0100 0 INFO Tabulator POST /fmi/data/vLatest/databases/xxx.fmp12/layouts/OttoReceiver/records 927
Otto-error:
2025-05-07T08:23:00.403Z error BadRequestError: Error: socket hang up. code: -2 - {“service”:“express-error-handler”}
fmdapi:
2025-05-07 09:22:32.460 +0100 952 ERROR POST /fmi/data/vLatest/databases/xxx.fmp12/layouts/OttoReceiver/records 92
2025-05-07 09:22:32.869 +0100 0 INFO Tabulator POST /fmi/data/vLatest/databases/xxx.fmp12/sessions 118
2025-05-07 09:24:10.572 +0100 0 INFO Tabulator POST /fmi/data/vLatest/databases/xxx.fmp12/layouts/OttoReceiver/records 1620
otto-error:
2025-05-13T13:21:27.516Z error BadRequestError: Error: socket hang up. code: -2 - {“service”:“express-error-handler”}
fmdapi:
2025-05-13 14:20:34.548 +0100 952 ERROR POST /fmi/data/vLatest/databases/xxx.fmp12/layouts/OttoReceiver/records 92
2025-05-13 14:20:34.727 +0100 0 INFO Tabulator POST /fmi/data/vLatest/databases/xxx.fmp12/sessions 118
2025-05-13 14:26:05.901 +0100 0 INFO Tabulator POST /fmi/data/vLatest/databases/xxx.fmp12/layouts/OttoReceiver/records 817
Otto-error:
2025-05-16T11:29:35.087Z error BadRequestError: Error: socket hang up. code: -2 - {“service”:“express-error-handler”}
fmdapi:
2025-05-16 12:29:28.547 +0100 952 ERROR POST /fmi/data/vLatest/databases/xxx.fmp12/layouts/OttoReceiver/records 92
2025-05-16 12:29:29.224 +0100 0 INFO Tabulator POST /fmi/data/vLatest/databases/xxx.fmp12/sessions 118
2025-05-16 12:31:13.804 +0100 0 INFO Tabulator POST /fmi/data/vLatest/databases/xxx.fmp12/layouts/OttoReceiver/records 817
Otto-error:
2025-05-19T11:53:32.192Z error BadRequestError: Error: socket hang up. code: -2 - {“service”:“express-error-handler”}
fmdapi:
2025-05-19 12:52:47.461 +0100 952 ERROR POST /fmi/data/vLatest/databases/xxx.fmp12/layouts/OttoReceiver/records 92
2025-05-19 12:52:47.646 +0100 0 INFO Tabulator POST /fmi/data/vLatest/databases/xxx.fmp12/sessions 118
2025-05-19 14:17:37.793 +0100 952 ERROR POST /fmi/data/vLatest/databases/xxx.fmp12/layouts/OttoReceiver/records 92
Otto-error:
2025-05-21T09:05:39.929Z error BadRequestError: Error: socket hang up. code: -2 - {“service”:“express-error-handler”}
fmdapi:
2025-05-21 10:04:55.349 +0100 952 ERROR POST /fmi/data/vLatest/databases/xxx.fmp12/layouts/OttoReceiver/records 92
2025-05-21 10:04:55.569 +0100 0 INFO Tabulator POST /fmi/data/vLatest/databases/xxx.fmp12/sessions 118
2025-05-21 10:17:29.231 +0100 0 INFO Tabulator POST /fmi/data/vLatest/databases/xxx.fmp12/layouts/OttoReceiver/records 525
Otto-error:
2025-05-21T10:24:28.527Z error BadRequestError: Error: socket hang up. code: -2 - {“service”:“express-error-handler”}
fmdapi:
2025-05-21 11:24:22.144 +0100 952 ERROR POST /fmi/data/vLatest/databases/xxx.fmp12/layouts/OttoReceiver/records 92
2025-05-21 11:24:22.342 +0100 0 INFO Tabulator POST /fmi/data/vLatest/databases/xxx.fmp12/sessions 118
2025-05-21 11:25:12.779 +0100 0 INFO Tabulator POST /fmi/data/vLatest/databases/xxx.fmp12/layouts/OttoReceiver/records 525
I do seem to get the error most frequently on the first time that a call is made to the webhook, ie. when a new token is needed. Don’t know if that is related.
Hope that helps.
Carl
Hi Kyle. Just wondering if you have any further thoughts on this issue?