Flutter: “packages pub”不释放颤振锁

当运行flutter packages pub run build_runner watch以生成模型类并根据我所做的更改使生成的代码保持最新时。 我无法构建或安装或热重新加载我正在处理的项目。
当我按下 intellij 中的运行按钮来编译和安装应用程序时，出现以下错误：

Waiting for another flutter command to release the startup lock...

当我终止 build_runner 进程时，它开始编译和安装项目。

如果我在项目已经在设备或模拟器/模拟器上运行时启动 build_runner 监视
更改代码时出现以下错误：

Initializing hot reload...
Your application could not be compiled, because its dependencies could not be established.
The following Dart file:
  /Users/user/projects/project/lib/value_models/models.dart
...refers, in an import, to the following library:
  /Users/user/projects/project/lib/value_models/models.g.dart
Unfortunately, that library does not appear to exist on your file system.

有没有办法为代码生成启动一个单独的过程，以便我们可以在开发过程中继续编译和运行我们的应用程序？