Fix Error in AI Web App: Estimates from Drawings (React + Vite + TypeScript + OpenAI + OCR)

I built an AI-powered web application using Lovable that allows users to upload construction/technical drawings and automatically generates cost estimates using OCR + OpenAI. The app is mostly complete, but there is a consistent error occurring during the estimate generation step. I need an experienced full-stack developer to debug and fix this issue quickly. Project Overview: - Frontend: React + Vite + TypeScript - AI Integration: OpenAI API (likely GPT-4o or similar for analysis) - OCR component for extracting text/data from drawings - Built primarily through Lovable (AI app builder), with custom code extensions - The flow is: Upload drawing → OCR processing → AI analysis → Generate structured estimate The Problem: When the user clicks to generate the estimate, an error occurs. I need someone to: 1. Identify the root cause of the error (could be in API calls, data formatting, OCR output handling, TypeScript types, state management, or Lovable-generated code conflicts). 2. Fix the bug and ensure the full flow works reliably. 3. Optionally improve error handling and add better logging for future debugging. Required Skills & Experience: - Strong proficiency in React, Vite, and TypeScript - Experience integrating OpenAI API (especially vision models like GPT-4o) - Hands-on experience with OCR (Tesseract.js, Azure OCR, or similar) - Experience working with AI-generated/low-code platforms like Lovable, Bubble, or similar is a big plus - Ability to debug complex async flows and API integrations - Clean, maintainable code practices Timeline & Budget: - Looking for a quick turnaround (ideally fixed within 2–5 hours) - Please include your estimated time and hourly rate bid in your proposal How to Apply: Please send a proposal with: - Your relevant experience with React + OpenAI integrations (especially vision/OCR projects) - Similar projects you’ve worked on - Any experience with Lovable or AI app builders - Your estimated time and hourly rate to complete the fix Only serious and available freelancers, please. I can provide the full codebase (GitHub repo) immediately after hiring. Looking forward to your proposals!