flutter Error:Cannot run with sound null safety, because the following dependencies don't support

学习flutter新版本的路上，真的是一天一个新惊喜啊

今天遇到的坑是 Flutter 升级高版本后，运行和build 报错
Error: Cannot run with sound null safety, because the following dependencies
don't support null safety:

解决方法：

运行

  flutter run --no-sound-null-safety

build

flutter build apk --no-sound-null-safety

好了~~大功告成