NodeOperationError: Cannot use 'in' operator to search for 'functionCall' in undefined

Questions
1

Describe the problem/error/question

After update my n8n version, the gemini node not working.

What is the error message (if any)?

I am getting this error.

NodeOperationError: Cannot use ‘in’ operator to search for ‘functionCall’ in undefined

Share the output returned by the last node

Information on your n8n setup

  • n8n version: 1.107.4
  • Database (default: SQLite): PostgreSQL
  • n8n EXECUTIONS_PROCESS setting (default: own, main):
  • Running n8n via : Docker
  • Operating system: ubuntu
3

Yes,

I am using gemini 2.5 pro model

5

I started getting this error today on and off. Did you find any solution to yours? I am using Gemini 2.5 Pro as well. Everything was working fine till yesterday. This morning it’s not.

6

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