Error message Paired item data for item from node 'Code2' is unavailable

Questions
1

Describe the problem/error/question

Dear,

I implement this workflow, i don’t understand what is means this error message, i would like to use chatInput value on “Question and Answer chain“?

My node Code2 filter data to give on the system prompt values checklist with chatInput enter by user, for example, if i ask “phone number“ on chatInput, the response give me ID_001 and other fields on same line

Thank you.

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What is the error message (if any)?

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Please share your workflow

Share the output returned by the last node

Information on your n8n setup

  • n8n version: 1.106.3

  • Database (default: SQLite):

  • n8n EXECUTIONS_PROCESS setting (default: own, main):

  • Running n8n via (Docker, npm, n8n cloud, desktop app): Docker

  • Operating system: Win10