Flutter json_serializable 版本问题引起

最近开发Flutter ，Model 生成.g.dart文件一直保存，也不知道哪有问题啊，经过各种尝试，终于找到解决办法
问题

循环打印： [INFO] 4.6s elapsed, 0/7 actions completed.
[INFO] 5.6s elapsed, 1/7 actions completed.
[INFO] 7.5s elapsed, 1/7 actions completed.
[INFO] 8.6s elapsed, 2/7 actions completed.
[INFO] 12.3s elapsed, 3/7 actions completed.
然后 就是不生成对应的.g.dart 文件

• dependency_overrides:
  analyzer: '0.39.14'
  build_resolvers: '1.3.10'

dev_dependencies:
flutter_test:
sdk: flutter
build_runner: ^1.7.2
json_serializable: ^3.2.5

参考：https://stackoverflow.com/questions/63334661/bad-state-unexpected-diagnostics-on-json-serializable-package-with-flutter