初次开发Flutter，初次使用Flutter第三方库（english_words）如下：
dependencies:
flutter:
sdk: flutter
cupertino_icons: ^1.0.2
english_words: ^3.1.5
结果：一跑报下面错
Launching lib\main.dart on Redmi K30 5G in debug mode...
Running Gradle task 'assembleDebug'...
Error: Cannot run with sound null safety, because the following dependencies
don't support null safety:
- package:english_words
For solutions, see https://dart.dev/go/unsound-null-safety
FAILURE: Build failed with an exception.
* Where:
Script 'D:\flutter\sdk\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 1070
* What went wrong:
Execution failed for task ':app:compileFlutterBuildDebug'.
> Process 'command 'D:\flutter\sdk\flutter\bin\flutter.bat'' finished with non-zero exit value 1
解决方法如下：
第一步：
在AndroidStudio->Run->Edit Configurations
image.png
第二步：在Additional run args 填入命令：--no-sound-null-safety
image.png
再运行就不会再报错了！
