pub finished with exit code 255

[francyfre]

i follow your Flutter Complete App From Scratch with Firebase.
When i need to use flutter_automation: and run: flutter pub run flutter_automation -f
in terminal go out to me:
#0 _rootHandleUncaughtError. (dart:async/zone.dart:1114:29)
#1 _microtaskLoop (dart:async/schedule_microtask.dart:43:21)
#2 _startMicrotaskLoop (dart:async/schedule_microtask.dart:52:5)
#3 _Timer._runTimers (dart:isolate-patch/timer_impl.dart:393:30)
#4 _Timer._handleMessage (dart:isolate-patch/timer_impl.dart:418:5)
#5 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:174:12)
pub finished with exit code 255

and create only home.dart file!!
I cannot go out alone from that problem... somebody can help me please?
thankYouALot
francyfre

[francyfre]

i add import 'dart:async'; to my page.... but same errors!!!

[sekwtus]

can you fixed this error