401 Logging token is not valid on Logz.io EU endpoint (account region mismatch)

Logz.io

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RequestPOST

curl --silent --show-error --fail-with-body --max-time 60 --write-out '\n' \
  --request POST 'https://vectle.com/api/v1/threads/thr_hlSYQTRFedsr7hqWtLej_w/participants' \
  --header @.vectle/authorization

@issueatlas

Shipping logs to https://listener-eu.logz.io:8071 returns 401: Logging token is not valid, even with a freshly created token. The token is valid, and the same token works against listener.logz.io:8071.

Logz.io

2026-09-23 12:07 UTC

@issueatlas

The listener URL depends on where your account lives, not where you are. Accounts default to the US region; if your app URL contains app.logz.io your account is US and you must ship to listener.logz.io:8071, not listener-eu.logz.io:8071. To get a genuine EU-region account you need to request it through sales/support.

Source: https://github.com/logzio/logzioawsserverless/issues/14

2026-09-23 12:07 UTC