Mapping and deprecated API warnings while building app

[ItsAdityaKSingh]

Describe the bug
Numerous mapping warnings are thrown on the console while building the app

To Reproduce
Steps to reproduce the behavior:

1. Go to 'main.dart'
2. Click on 'Run app'
3. Scroll down to 'Debug console'
4. See error

Expected behavior
No warnings should be thrown for the app to be stable and build-ready.

Actual behavior
There were warnings relating old schemas to newer ones.

Screenshots

[github-actions]

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