You are building a fat APK that includes binaries for android-arm, android-arm64, android-x64.
If you are deploying the app to the Play Store, it's recommended to use app bundles or split the APK to
reduce the APK size.
To generate an app bundle, run:
flutter build appbundle --target-platform android-arm,android-arm64,android-x64
Learn more on: https://developer.android.com/guide/app-bundle
To split the APKs per ABI, run:
flutter build apk --target-platform android-arm,android-arm64,android-x64 --split-per-abi
Learn more on:
https://developer.android.com/studio/build/configure-apk-splits#configure-abi-split
[!] Your app isn't using AndroidX.
To avoid potential build failures, you can quickly migrate your app by following the steps on
https://goo.gl/CP92wY.

Compiler message:
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.12.0/lib/src/picture_provider.dart:335:20: Error: The argument type 'String' can't be assigned to the parameter type 'DiagnosticsNode'.

• 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('/C:/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
  context: 'while resolving a picture',
  ^
  /C:/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.12.0/lib/src/picture_provider.dart:337:33: Error: The argument type 'Null Function(StringBuffer)' can't be assigned to the parameter type 'Iterable Function()'.
• 'StringBuffer' is from 'dart:core'.
• 'Iterable' is from 'dart:core'.
• 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('/C:/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
  informationCollector: (StringBuffer information) {
  ^
  /C:/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.12.0/lib/src/picture_provider.dart:432:31: Error: The argument type 'Null Function(StringBuffer)' can't be assigned to the parameter type 'Iterable Function()'.
• 'StringBuffer' is from 'dart:core'.
• 'Iterable' is from 'dart:core'.
• 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('/C:/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
  informationCollector: (StringBuffer information) {
  ^
  /C:/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.12.0/lib/src/picture_provider.dart:495:31: Error: The argument type 'Null Function(StringBuffer)' can't be assigned to the parameter type 'Iterable Function()'.
• 'StringBuffer' is from 'dart:core'.
• 'Iterable' is from 'dart:core'.
• 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('/C:/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
  informationCollector: (StringBuffer information) {
  ^
  /C:/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.12.0/lib/src/picture_provider.dart:559:31: Error: The argument type 'Null Function(StringBuffer)' can't be assigned to the parameter type 'Iterable Function()'.
• 'StringBuffer' is from 'dart:core'.
• 'Iterable' is from 'dart:core'.
• 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('/C:/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
  informationCollector: (StringBuffer information) {
  ^
  /C:/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.12.0/lib/src/picture_stream.dart:92:3: Error: The superclass, 'Diagnosticable', has no unnamed constructor that takes no arguments.
  PictureStream();
  ^^^^^^^^^^^^^
  /C:/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.12.0/lib/src/picture_stream.dart:252:16: Error: The argument type 'String' can't be assigned to the parameter type 'DiagnosticsNode'.
• 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('/C:/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
  context: context,
  ^
  /C:/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.12.0/lib/src/picture_stream.dart:297:18: Error: The argument type 'String' can't be assigned to the parameter type 'DiagnosticsNode'.
• 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('/C:/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
  context: 'resolving a single-frame picture stream',
  ^
  /C:/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.12.0/lib/svg.dart:158:18: Error: The argument type 'String' can't be assigned to the parameter type 'DiagnosticsNode'.
• 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('/C:/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
  context: 'picture failed to precache',
  ^
  /C:/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.12.0/lib/src/svg/parser_state.dart:395:35: Error: The argument type 'Null Function(StringBuffer)' can't be assigned to the parameter type 'Iterable Function()'.
• 'StringBuffer' is from 'dart:core'.
• 'Iterable' is from 'dart:core'.
• 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('/C:/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
  informationCollector: (StringBuffer buff) {
  ^
  /C:/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.12.0/lib/src/svg/parser_state.dart:404:22: Error: The argument type 'String' can't be assigned to the parameter type 'DiagnosticsNode'.
• 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('/C:/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
  context: 'in _Element.clipPath',
  ^
  /C:/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.12.0/lib/src/svg/parser_state.dart:777:31: Error: The argument type 'Null Function(StringBuffer)' can't be assigned to the parameter type 'Iterable Function()'.
• 'StringBuffer' is from 'dart:core'.
• 'Iterable' is from 'dart:core'.
• 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('/C:/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
  informationCollector: (StringBuffer buff) {
  ^
  /C:/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.12.0/lib/src/svg/parser_state.dart:788:18: Error: The argument type 'String' can't be assigned to the parameter type 'DiagnosticsNode'.
• 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('/C:/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
  context: 'in parseSvgElement',
  ^
  /C:/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.12.0/lib/src/utilities/errors.dart:8:32: Error: The argument type 'String' can't be assigned to the parameter type 'DiagnosticsNode'.
• 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('/C:/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
  context: 'in $methodName',
  ^
  /C:/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.12.0/lib/src/utilities/errors.dart:10:29: Error: The argument type 'Null Function(StringBuffer)' can't be assigned to the parameter type 'Iterable Function()'.
• 'StringBuffer' is from 'dart:core'.
• 'Iterable' is from 'dart:core'.
• 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('/C:/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
  informationCollector: (StringBuffer buff) {
  ^
  /C:/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.12.0/lib/src/picture_stream.dart:190:16: Error: The superclass, 'Diagnosticable', has no unnamed constructor that takes no arguments.
  abstract class PictureStreamCompleter extends Diagnosticable {
  ^
  Target kernel_snapshot failed: Exception: Errors during snapshot creation: null
  build failed.

FAILURE: Build failed with an exception.

• Where:
  Script 'C:\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 882

• What went wrong:
  Execution failed for task ':app:compileFlutterBuildRelease'.

Process 'command 'C:\flutter\bin\flutter.bat'' finished with non-zero exit value 1

• Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

• Get more help at https://help.gradle.org

BUILD FAILED in 11s
Running Gradle task 'assembleRelease'...
Running Gradle task 'assembleRelease'... Done 11.6s
Gradle task assembleRelease failed with exit code 1

What will be the best practice to move the MusicButton, SoundButton and ScoreDisplay within the safe area? The same is needed at the bottom of the screen. Does flame supports a safe area? It's needed for iPhone X/Xs and newer Android phones, with a notch/cutout.