Flutter Release Build Configuration Fix

I'm seeking a Flutter developer experienced in troubleshooting and resolving Flutter project release build configuration errors in both Android Studio and Xcode.

Key Points:
- I've updated Flutter and its dependencies to the latest versions, but still encountering the release build error
- I'm uncertain whether the issue lies in platform-specific dependencies or code

Ideal Candidate:
- Proficient in Flutter and its ecosystem
- Experience in resolving build configuration errors in both Android Studio and Xcode
- Comfortable navigating and troubleshooting platform-specific dependencies in Flutter
- Excellent communication skills to help understand the issue and provide a clear resolution plan.

What I want:
- All flutter_gradle_plugin_apply must be migrate plugins block
- All code must be updated to the latest version
- There must not be any Sync errors or any Build errors. All must be UP-TO-DATE

I HAVE TWO DIFFERENT FLUTTER APP, WHICH MUST WORK FLAWLESSLY WITHOUT ANY ERRORS!!

DUE TO COMPANY RULES AND COPYRIGHTS, I CANNOT SEND THE CODE TO ANYONE. THEREFORE, THE WORK MUST BE DONE AS A COLLABORATIVE SOLUTION!!

CONTACT ONLY THOSE WHO KNOW HOW TO REALLY FULFILL ALL THE CONDITIONS!!