Fix Bugs in Next.js CRM + n8n Automation (Lead & Appointment Errors)

Fix Bugs in Next.js CRM + n8n Automation (Lead & Appointment Errors) Category: Web Development / Automation & AI Job Description: I have a custom-built CRM using Next.js, integrated with n8n for automation workflows. Currently, there are two critical bugs affecting core functionality: New Lead Issue: Whenever a new lead comes in, the n8n workflow throws an error, and the lead does not appear in the CRM. Appointment Booking Issue: Whenever a user books an appointment, it also throws an error and the booking process fails completely. I need an experienced developer to debug and fix both issues so that leads sync properly into the CRM and appointment booking works without errors. Responsibilities: Review and debug the existing n8n workflow(s) handling lead intake Identify why leads aren't syncing to the Next.js CRM Fix the appointment booking flow (n8n + CRM integration) Test both flows end-to-end to confirm they work reliably Provide a short explanation of root cause and fix applied Required Skills: Next.js (front-end + API routes) n8n (workflow automation, webhooks, error handling) Node.js / REST API integration Debugging AI/automation workflows Familiarity with CRM systems Nice to Have: Experience with AI-powered automation (OpenAI API, chatbots, etc.) MongoDB/PostgreSQL experience