Problem running workflow - Cannot read properties of undefined (reading 'node')

I’m new to n8n and creating a simple workflow. It starts with a ‘When chat message received’ trigger. I’ve activated the workflow. When I send a message (“hi”) in the n8n chat, the trigger node correctly shows ‘1 item’. However, after a short delay, the workflow fails with the error: ‘Problem running workflow - Cannot read properties of undefined (reading ‘node’)’. The execution log also shows ‘Workflow execution had an error - Cannot read properties of undefined (reading ‘node’)’. What could be causing this error, and how can I debug it?


It looks like your topic is missing some important information. Could you provide the following if applicable.

  • n8n version:
  • Database (default: SQLite):
  • n8n EXECUTIONS_PROCESS setting (default: own, main):
  • Running n8n via (Docker, npm, n8n cloud, desktop app):
  • Operating system:

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