Hello, when I start the project I get this problems:
Launching lib\main.dart on Android SDK built for x86 in debug mode...
Warning: Operand of null-aware operation '!' has type 'SchedulerBinding' which excludes null.
- 'SchedulerBinding' is from 'package:flutter/src/scheduler/binding.dart' ('/C:/tools/flutter/packages/flutter/lib/src/scheduler/binding.dart').
SchedulerBinding.instance!.addPostFrameCallback((_) {
^
Warning: Operand of null-aware operation '!' has type 'WidgetsBinding' which excludes null.
- 'WidgetsBinding' is from 'package:flutter/src/widgets/binding.dart' ('/C:/tools/flutter/packages/flutter/lib/src/widgets/binding.dart').
WidgetsBinding.instance!.addPostFrameCallback((_) {
^
Error: Member not found: 'packageRoot'.
io.Platform.packageRoot; // ignore: deprecated_member_use
^^^^^^^^^^^
how do I fix this?