Flutter App Debug & Fix

I have a production-level Flutter application that runs on Android, iOS and the Web and talks to a Laravel/PHP backend (with its own admin panel) through a set of REST APIs. It also relies on Firebase for authentication and a few other services... (Budget: ₹1500 - ₹12500 INR, Jobs: Android, Flutter, iOS Development, iPhone, Laravel, Mobile App Development, PHP, REST API)