我去年开始学习flutter，创建了一个运行良好的小项目，直到现在才停止学习......
所以今天，将 flutter 更新到最新版本（2.5.0）并再次开始运行该项目后，在尝试再次运行它时遇到了此错误：
Launching lib\order_route.dart on ASUS X01BDA in debug mode...
Running Gradle task 'assembleDebug'...
/D:/progie/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_widgets-0.1.12/lib/src/tagged_text/tagged_text.dart:295:36: Error: No named parameter with the name 'nullOk'.
MediaQuery.of(context, nullOk: true)?.textScaleFactor ??
^^^^^^
/D:/progie/flutter/packages/flutter/lib/src/widgets/media_query.dart:841:25: Context: Found this candidate, but the arguments don't match.
static MediaQueryData of(BuildContext context) {
^^
/D:/progie/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_widgets-0.1.12/lib/src/feature_discovery/src/overlay_widgets.dart:239:20: Error: The getter 'title' isn't defined for the class 'TextTheme'.
- 'TextTheme' is from 'package:flutter/src/material/text_theme.dart' ('/D:/progie/flutter/packages/flutter/lib/src/material/text_theme.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field …