error: use of undeclared identifier 'GMSServices'

[Deleted user]

Launching lib/main.dart on iPhone 11 Pro Max in debug mode...
Xcode build done.                                           15,7s
Failed to build iOS app
Error output from Xcode build:
↳
    ** BUILD FAILED **
Xcode's output:
↳
    /Users/xi/github/findseat/ios/Runner/AppDelegate.m:8:4: error: use of undeclared identifier 'GMSServices'
      [GMSServices provideAPIKey:@"AIzaSyAh9zLZ2W2yMW_R0eMxH-thhONdi3XZ_aY"];
       ^
    1 error generated.
    note: Using new build system
    note: Planning build
    note: Constructing build description
Could not build the application for the simulator.
Error launching application on iPhone 11 Pro Max.
Exited (sigterm)

[KhoaSuperman]

This is not about app itself, it comes from your development environment. Please try to open issue in Stackoverflow or searching in Google. Tks