Self-Hosted Chat Trigger Workflow Hangs on Response Node

Questions
2

Greeting fellow automator! :waving_hand:

I could not reproduce the error with the Respond to Chat and Respond to Webhook nodes hanging indefinitely. My current setup is n8n behind Traefik running on Docker, with Cloudflare in front of it, and everything works as expected.

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Based on your symptoms and setup (Oracle Cloud + Docker + Caddy + Google Sites), my first impression is that the issue is somewhere in the network configuration, specifically between Caddy, your Docker environment variables, and how n8n generates webhook URLs

Suspected Root Cause

The missing input field and workflow hanging are typically caused by:

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  1. Missing WEBHOOK_URL environment variable → n8n generates URLs with :5678 port

  2. Caddy not properly forwarding WebSocket connections → Chat initialization fails

  3. Initial chat request without chatInput → Workflow fails on first load

REF: