N8N Workflow Middleware Bug Fix

My N8N-based virtual agent is throwing workflow errors. The problem surfaces in the middleware logic and manifests as the trigger firing multiple times when it should execute only once per event. I need the root cause identified, the flow corrected, and a brief explanation of what was changed so I can maintain it going forward.

You’ll have access to the current .json export and, if helpful, a short Loom walkthrough that shows the mis-behaviour in real time. Please use the built-in N8N debugger and any Node.js or TypeScript tools you find convenient—just keep the final solution confined to the N8N environment so I can import it back without extra dependencies.

Deliverables:
• Cleaned-up workflow file(s) with the middleware logic fixed
• Confirmation that the trigger fires exactly once per intended event
• A concise changelog or inline comments highlighting your adjustments

I’m ready to share credentials to the staging instance as soon as we agree on the approach and timeline.