Fix and Deploy React.js & Flask App on AWS

I'm having some server configuration problems while trying to deploy my React.js and Python Flask application on an AWS EC2 instance. The server setup needs to be properly configured to ensure that the application starts and runs smoothly.

Key Requirements:
- Troubleshoot and fix server configuration issues
- Ensure the application is properly set to start and run
- Configure the server setup correctly

Ideal Skills and Experience:
- Extensive experience with AWS EC2
- Strong knowledge in server configuration
- Proficient in React.js and Python Flask
- Previous experience in fixing deployment issues
- Excellent problem-solving skills