Multi-step forms don’t load

Describe the problem/error/question

(Sorry for my poor English, I’m French)
In test mode:
Submit keeps loading in the trigger form
First next form page opens in a new window (whether “next form page” or “form ending”)
Second doesn’t display
In production, submit keeps loading and that’s all.

One-step forms work fine.

What is the error message (if any)?

No error message, just keeps loading.

Please share your workflow

I first thought it was an issue with my workflows, but I reproduced the bug with example workflows, so it must be my setup:

https://docs.n8n.io/_workflows/integrations/builtin/core-nodes/n8n-nodes-base.form/mutually-exclusive-branching.json

https://docs.n8n.io/_workflows/integrations/builtin/core-nodes/n8n-nodes-base.form/multiple-branch-execution.json

Share the output returned by the last node

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Information on your n8n setup

  • n8n version: 2.17.6
  • Database (default: SQLite): default
  • n8n EXECUTIONS_PROCESS setting (default: own, main): Default
  • **Running n8n via (Docker, npm, n8n cloud, desktop app): ** Docker
  • Operating system: Windows 11
    Maybe the environment in the docker-compose.yml can help:
 environment:
      - N8N_HOST=$SERVER_NAME
      - N8N_PORT=80
      - WEBHOOK_URL=$SERVER_URL
      - NODE_TLS_REJECT_UNAUTHORIZED=0
      - N8N_PROXY_HOPS=1

@jmoura, welcome!
Have you tried downgrading your n8n version? OR giving your instance a restart?

Hi !

I already had the issues 6 months ago, when I was in 1.something, but at the moment had no need on multi-steps forms. So I have upgraded since but still the issue.

@jmoura can you try reinstalling n8n entirely? If that is an option you can consider after exporting your flows. As I believe there is something wrong with the build. As this is highly unusual.

Hello, the issue was simple : $SERVER_URL was not defined, works now with the correct WEBHOOK_URL