Why Did My Production Webhook Suddenly Fail in My Railway n8n Worker Setup?

Below is a list of troubleshooting steps based on common issues with production webhook endpoints in n8n:

1. Verify your webhook URL:
   When running in production, your WEBHOOK_URL environment variable must point to a valid public HTTPS endpoint. Check that this variable is set correctly in your Railway environment. If the URL is incorrect or if Railway changed something about how URLs are presented, the production endpoint might stop receiving calls.

2. Check reverse proxy and TLS settings:
   Many production issues come from running n8n behind a reverse proxy. Even if Railway is “hands off” for you, ensure that the HTTPS connection is properly terminated. A misconfigured proxy (or similar service) can result in errors such as “bad webhook” if the URL isn’t using HTTPS, which in turn stops the production webhook from working.

3. Avoid conflicts between test and production URLs:
   Some integrations (such as Telegram or Slack) only allow a single registered webhook URL. If you’ve recently switched from a testing URL to production (or vice versa), the external app might still be sending requests to the previously registered URL. In such cases, disabling the testing workflow to allow the production webhook to re-register properly can help.

4. Review recent changes:
   A recent change in Railway’s infrastructure or in your configuration (e.g., environment variables getting reset) might be causing the issue. Checking your Railway logs or deployment settings can help pinpoint any changes that occurred since yesterday.

If after these steps your production link still isn’t working, it might be useful to review the Railway-specific logs or contact their support—ensuring, of course, that your webhook settings in n8n match the expected configurations outlined above.

Hope this helps you identify and resolve the issue with your production endpoint!