Telegram Trigger in n8n: 'Resource Not Found' Error When Testing (Docker + Traefik Setup)

Questions
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1

Telegram Trigger in n8n: ‘Resource Not Found’ Error When Testing (Docker + Traefik Setup)

Describe the problem/error/question

I’m running into an issue where the Telegram Trigger node fails to test. I’ve seen this thread with the same error message. However, my setup uses Docker with Traefik as the reverse proxy, and I believe everything is correctly configured.

When I try to test the Telegram Trigger node, I get this error popup:

Error Screenshot

What is the error message (if any)?

Problem running workflow
The resource you are requesting could not be found
Telegram Trigger: Not Found

Please share your workflow

Share the output returned by the last node

N/A — the error happens at the trigger level during test.

Information on your n8n setup

  • n8n version: 1.89.2
  • Database (default: SQLite): Default
  • n8n EXECUTIONS_PROCESS setting (default: own, main): own
  • Running n8n via (Docker, npm, n8n cloud, desktop app): Docker with Traefik
  • Operating system: Ubuntu 22.04 on VPS

Any help would be appreciated!

2

Telegram seems to be one of the more difficult integrations to set up. Just a few other things to check (in case you haven’t already).

  • Is the certificate configuration in Traefik set up to use a publicly trusted certificate authority like LetsEncrypt? Telegram won’t work with self signed certificates.
  • Is the domain/subdomain where you are hosting n8n reachable from the public internet (i.e. registered in public DNS and nat-forwarded/routed/etc to the SSL/https listener of Traefik)?
3

Quickly checked to confirm, using letsencrypt ssl, also checked the subdomains public accesibility. Everything is set up.