[Flutter] Error "The term 'flutterfire' is not recognized as the name of a cmdlet, function,...

I'm trying to install flutterfire_cli in my root project, so I typed this command:

FirebaseFirestore firestore = FirebaseFirestore.instance;


After that, this is the console session (PowerShell):

cd C:\Users\PC\Desktop\eventually
dart pub global activate flutterfire_cli


Output:

Package flutterfire_cli is currently active at version 0.1.1+2.
Resolving dependencies...
The package flutterfire_cli is already activated at newest available version.
To recompile executables, first run `global deactivate flutterfire_cli`.
Installed executable flutterfire.
Warning: Pub installs executables into C:\Users\PC\AppData\Local\Pub\Cache\bin, which is not on your path.
You can fix that by adding that directory to your system's "Path" environment variable.
A web search for "configure windows path" will show you how.
Activated flutterfire_cli 0.1.1+2.


To fix the warning, I added C:\Users\PC\AppData\Local\Pub\Cache\bin to my Path environment variable in the system variables environment. (But it does not work, I'm still getting the warning)

Next, I'm trying to generate the firebase_options.dart file as the documentation says using this command:

flutterfire configure


But I'm getting an error in the console (PowerShell):

cd C:\Users\PC\Desktop\eventually
flutterfire configure


Output:

flutterfire : The term 'flutterfire' is not recognized as the name of a cmdlet, function, script file, or operable
program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:1
+ flutterfire configure
+ ~~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (flutterfire:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException


What am I missing? Why am I getting this error even if the Firebase CLI is already installed on my machine?

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