我试图将我的 Flutter 项目配置为在网络上运行。flutter channel master我尝试运行后使用切换到主通道flutter upgrade。我现在得到一个无限循环：
Building flutter tool...
Running pub upgrade...
Pub failed to delete entry because it was in use by another process.
This may be caused by a virus scanner or having a file
in the directory open in another application.
Error (1): Unable to 'pub upgrade' flutter tool. Retrying in five seconds... (9 tries left)
Waiting for 0 seconds, press CTRL+C to quit ...
Running pub upgrade...
Pub failed to delete entry …