Unknown error that does not disappear after a revert

good afternoon!
I have this problem after using a version of the SDK Flutter with web support. And even after reverting the commits to the point where there was no error, this error continues:

E/flutter ( 8598): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: FileSystemException: Cannot open file, path = ‘/data/data/com.example.chaveirinho_v7/app_flutter/data.json’ (OS Error: No such file or directory, errno = 2)
E/flutter ( 8598): #0 _File.open. (dart:io/file_impl.dart:366:9)
E/flutter ( 8598): #1 _rootRunUnary (dart:async/zone.dart:1192:38)
E/flutter ( 8598): #2 _CustomZone.runUnary (dart:async/zone.dart:1085:19)
E/flutter ( 8598): #3 _FutureListener.handleValue (dart:async/future_impl.dart:141:18)
E/flutter ( 8598): #4 Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:682:45)
E/flutter ( 8598): #5 Future._propagateToListeners (dart:async/future_impl.dart:711:32)
E/flutter ( 8598): #6 Future._completeWithValue (dart:async/future_impl.dart:526:5)
E/flutter ( 8598): #7 Future._asyncComplete. (dart:async/future_impl.dart:556:7)
E/flutter ( 8598): #8 _rootRun (dart:async/zone.dart:1184:13)
E/flutter ( 8598): #9 _CustomZone.run (dart:async/zone.dart:1077:19)
E/flutter ( 8598): #10 _CustomZone.runGuarded (dart:async/zone.dart:979:7)
E/flutter ( 8598): #11 _CustomZone.bindCallbackGuarded. (dart:async/zone.dart:1019:23)
E/flutter ( 8598): #12 _microtaskLoop (dart:async/schedule_microtask.dart:43:21)
E/flutter ( 8598): #13 _startMicrotaskLoop (dart:async/schedule_microtask.dart:52:5)