ERROR ITMS-90725: "SDK Version Issue. This app was built with the iOS 12.4 SDK. New apps for iPhone or iPad must be built with the iOS 13 SDK or later." code example

Example 1: WARNING: pip is being invoked by an old script wrapper. This will fail in a future version of pip.

python -m pip install --upgrade --force-reinstall pip

Example 2: flutter You uploaded an APK or Android App Bundle that was signed in debug mode

buildTypes {
        release {
            // TODO: Add your own signing config for the release build.
            // Signing with the debug keys for now, so `flutter run --release` works.
            signingConfig signingConfigs.release
        }
    }
    // FLUTTER CLEAN AFTER THE EDIT

Example 3: MatDatepicker: No provider found for DateAdapter. You must import one of the following modules at your application root: MatNativeDateModule, MatMomentDateModule, or provide a custom implementation

import {MatNativeDateModule} from '@angular/material';