Periodic Queries - wierd inconsistent bug on "Start once"

[TheFehr]

I have set up a periodic query that I am trying to send via webhook to a automation platform.

Sometimes the "Start once" button works perfectly fine. Sometimes I get this in the job log:

Sat, August 6th, 2022, 11:39: Using query: (& f:event-date:"*" f:sync-calendar:"true" )
Sat, August 6th, 2022, 11:39: Running query: Right((& f:event-date:"*" f:sync-calendar:"true" ))
Sat, August 6th, 2022, 11:39: HttpPost(https://receiver.mydomain.com/webhook-test/docspell,Map()) sending request: Request(method=POST, uri=https://receiver.mydomain.com/webhook-test/docspell, httpVersion=HTTP/1.1, headers=Headers(Content-Type: application/json, Content-Length: 2447))
Sat, August 6th, 2022, 11:39: Job 9mDky3owx.../phil/periodic-query-notify2/Low execution failed. Retrying later.: Error sending notification via HttpPost(https://receiver.mydomain.com/webhook-test/docspell,Map()): 404 Not Found
Sat, August 6th, 2022, 12:03: Using query: (& f:event-date:"*" f:sync-calendar:"true" )
Sat, August 6th, 2022, 12:03: Running query: Right((& f:event-date:"*" f:sync-calendar:"true" ))
Sat, August 6th, 2022, 12:03: HttpPost(https://receiver.mydomain.com/webhook-test/docspell,Map()) sending request: Request(method=POST, uri=https://receiver.mydomain.com/webhook-test/docspell, httpVersion=HTTP/1.1, headers=Headers(Content-Type: application/json, Content-Length: 2447))
Sat, August 6th, 2022, 12:03: Job 9mDky3owx.../phil/periodic-query-notify2/Low execution failed. Retrying later.: Error sending notification via HttpPost(https://receiver.mydomain.com/webhook-test/docspell,Map()): 404 Not Found
Sat, August 6th, 2022, 12:06: Using query: (& f:event-date:"*" f:sync-calendar:"true" )
Sat, August 6th, 2022, 12:06: Running query: Right((& f:event-date:"*" f:sync-calendar:"true" ))
Sat, August 6th, 2022, 12:06: HttpPost(https://receiver.mydomain.com/webhook-test/docspell,Map()) sending request: Request(method=POST, uri=https://receiver.mydomain.com/webhook-test/docspell, httpVersion=HTTP/1.1, headers=Headers(Content-Type: application/json, Content-Length: 2447))
Sat, August 6th, 2022, 12:06: Job 9mDky3owx.../phil/periodic-query-notify2/Low execution failed. Retries exceeded.: Error sending notification via HttpPost(https://receiver.mydomain.com/webhook-test/docspell,Map()): 404 Not Found

This is a "successful" log:

Sat, August 6th, 2022, 12:11: Using query: (& f:event-date:"*" f:sync-calendar:"true" )
Sat, August 6th, 2022, 12:11: Running query: Right((& f:event-date:"*" f:sync-calendar:"true" ))
Sat, August 6th, 2022, 12:11: HttpPost(https://receiver.mydomain.com/webhook-test/docspell,Map()) sending request: Request(method=POST, uri=https://receiver.mydomain.com/webhook-test/docspell, httpVersion=HTTP/1.1, headers=Headers(Content-Type: application/json, Content-Length: 2447))
Sat, August 6th, 2022, 12:11: Job BW2JQYUTN.../phil/periodic-query-notify2/Low execution failed. Retrying later.: Error sending notification via HttpPost(https://receiver.mydomain.com/webhook-test/docspell,Map()): 404 Not Found
Sat, August 6th, 2022, 12:12: Using query: (& f:event-date:"*" f:sync-calendar:"true" )
Sat, August 6th, 2022, 12:12: Running query: Right((& f:event-date:"*" f:sync-calendar:"true" ))
Sat, August 6th, 2022, 12:12: HttpPost(https://receiver.mydomain.com/webhook-test/docspell,Map()) sending request: Request(method=POST, uri=https://receiver.mydomain.com/webhook-test/docspell, httpVersion=HTTP/1.1, headers=Headers(Content-Type: application/json, Content-Length: 2447))
Sat, August 6th, 2022, 12:12: Send notification via HttpPost(https://receiver.mydomain.com/webhook-test/docspell,Map())
Sat, August 6th, 2022, 12:12: Job execution successful

[eikek]

This looks like the url https://receiver.mydomain.com/webhook-test/docspell returns a 404 on some of the post requests? It cannot send the notification. I think this is not related to the "start once" button - this is only triggering the job, once it is running it's task is done. Hm, strange it is. I don't know anything about the software that drives the receiving url, but maybe you could take a look if the network to it and the server is fine? Maybe sending a bunch of such requests in a loop or something… After all docspell only sends a normal (always the same) http post request to this url, currently I would suspect something strange on the other end. Or maybe the logs of the receiving server can give some details about the requests that arrive there?

[TheFehr]

The receiver is an instance of n8n. And is seems that it is the fault of n8n or mine.

But we can definitely close this. I was mostly confused by the ...-test/docspell,Map() ,Map() part in the logs. But I assume that is just formatting and does not influence the actual url being called.