After upgrading my AWS EC2 instance (Windows), my full-stack web application is not functioning correctly. Specifically, the React login page is failing, potentially due to the Python APIs not running or being unreachable. The stack includes: - Frontend: React - Backend: Python (Flask / FastAPI) - Database: MySQL I need assistance with: 1. Verifying and restarting the Python API service on Windows, ensuring it's listening on the correct port. 2. Checking the MySQL database connection and credentials. 3. Validating API routes and ensuring the React .env configuration (API base URL, CORS, etc.) is correct. 4. Reviewing the IIS or reverse-proxy setup, if applicable. 5. Providing basic debugging steps for React, Python, and MySQL on a Windows EC2 instance. Please reach out if you are experienced with troubleshooting full-stack applications on Windows EC2 instances. Thank you!