Hi @factor3
n8n builds the chat endpoint URL from those two vars, so localhost only resolves when the browser runs on the same machine as n8n. From any other machine the chat widget posts to a host it can’t reach and the workflow never starts, which is why the Chain gets no input. Set them to the exact address you type to open the editor:
N8N_EDITOR_BASE_URL=http://192.168.2.x:5678
N8N_WEBHOOK_URL=http://192.168.2.x:5678/
N8N_WEBHOOK_URL is the current name for WEBHOOK_URL, which still works but logs a deprecation warning. Restart the container, then send a chat message with DevTools open on the Network tab, the request should go to that address instead of localhost.
See this: