mattkae

Launching lib/main.dart on macOS in debug mode...
../../packages/flutter/lib/src/semantics/semantics.dart:6372:1: Error: Type 'Tristate' not found.
Tristate _tristateFromBoolOrNull(bool? value) {
^^^^^^^^
../../packages/flutter/lib/src/widgets/localizations.dart:647:48: Error: The method 'setApplicationLocale' isn't defined for the type 'PlatformDispatcher'.
 - 'PlatformDispatcher' is from 'dart:ui'.
Try correcting the name to the name of an existing method, or defining a method named 'setApplicationLocale'.
    WidgetsBinding.instance.platformDispatcher.setApplicationLocale(locale!);
                                               ^^^^^^^^^^^^^^^^^^^^
../../packages/flutter/lib/src/widgets/semantics_debugger.dart:230:43: Error: The getter 'CheckedState' isn't defined for the type '_SemanticsDebuggerPainter'.