显然我曾经做过以下事情：
$ firebase login
$ firebase init
$ firebase init emulators
...skip
i Port for functions already configured: 5001
i Port for firestore already configured: 8080
i Port for database already configured: 9000
i Port for hosting already configured: 5000
i Port for pubsub already configured: 8085
i Emulator UI already enabled with port: (automatic)
? Would you like to download the emulators now? Yes
i ui: downloading ui-v1.4.1.zip...
i Writing configuration info to firebase.json...
i Writing project information to .firebaserc...
✔ Firebase initialization complete!
但是当我尝试 firebase emulators:start --only hosting:my_project_target_name 时，我收到以下消息。
$ firebase emulators:start --only hosting:my_project_target_name
i emulators: Shutting down emulators.
Error: No emulators to start, run firebase init emulators to get started.
我的开发环境如下。
我在 sudo su 之后再次尝试，但结果是一样的。
我该怎么办？
添加内容。
它只适用于：
$ sudo firebase emulators:start --only hosting
i emulators: Starting emulators: hosting
...
hosting[TARGET_NAME_!]: Local server: http://localhost:5000
...
hosting[TARGET_NAME_2]: Local server: http://localhost:5005
我只想测试托管一个项目。