Когда я запускаю приложение flutter, оно строится успешно, но у нас есть функция входа в систему с помощью электронной почты Google. Я выполнил все зависимости правильно, но когда я нажимаю вход в систему Google, но это дает некоторую ошибку. Это просто выглядит так
E/flutter (11863): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: type 'PlatformException' is not a subtype of type 'String'
E / flutter (11863): # 0 _GoogleSignAppState.build ... (package: fluttergooglesigninapp / main.dart: 112: 67) E / flutter (11863): # 1 _rootRunUnary (dart: async / zone.dart: 1192: 38) E / flutter (11863): # 2 _CustomZone.runUnary (dart: async / zone.dart: 1085: 19) E / flutter (11863): # 3 _FutureListener.handleError (dart: async / future_impl.dart: 159: 20) E / flutter (11863): # 4 Future._propagateToListeners.handleError (dart: async / future_impl.dart: 694: 47) E / flutter (11863): # 5 Future._propagateToListeners (dart: async / future_impl.dart: 715: 24) E / flutter (11863): # 6 Future._completeError (dart: async / future_impl.dart: 534: 5) E / flutter (11863): # 7 _AsyncAwaitCompleter.completeError (dart: asyn c -patch /async_patch.dart:43:15) E / flutter (11863): # 8 _GoogleSignAppState._signIn (package: flutte rgooglesigninapp / main.dart) E / flutter (11863): E / flutter (11863): # 9 _GoogleSignAppState.build .. (пакет: fluttergooglesigninapp / main.dart: 110: 38) E / flutter (11863): # 10 _InkResponseState ._handleTap (пакет: flutter / src / material / ink_well.dart: 779: 19) E / flutter (11863): # 11 _InkResponseState.build. (пакет: flutter / src / material / ink_well.dart: 862: 36) E / flutter (11863): # 12 GestureRecognizer.invokeCallback (пакет: flutter / src / gestures / распознаватель.dart: 182: 24) E / flutter ( 11863): # 13 TapGestureRecognizer.handleTapUp (пакет: flutter / src / gestures / tap.dart: 504: 11) E / flutter (11863): # 14 BaseTapGestureRecognizer._checkUp (пакет: flutter / src / gestures / tap.dart: 282: 5) E / flutter (11863): # 15 BaseTapGestureRecognizer.handlePrimaryPointer (пакет: flutter / src / gestures / tap.dart: 217: 7) E / flutter (11863): # 16 PrimaryPointerGestureRecognizer.handleEvent (пакет: flutter / src / gestures / распознаватель.dart: 475: 9) E / flutter (11863): # 17 PointerRouter._dispatch (пакет: flutter / src / gestures / pointer_router.dart: 76: 12) E / flutter (11863): # 18 PointerRouter._dispatchEventToRoutes. (пакет: flutter / src / gestures / pointer_router.dart: 122: 9) E / flutter (11863): # 19 _LinkedHashMapMixin.forEach (dart: collection-patch / compact_ha sh .dart: 379: 8) E / flutter (11863): # 20 PointerRouter._dispatchEventToRoutes (пакет: flutter / src / gestures / pointer_router.dart: 120: 18) E / flutter (11863): # 21 PointerRouter.route (пакет: flutter / src / gestures / pointer_router.dart : 106: 7) E / flutter (11863): # 22 GestureBinding.handleEvent (пакет: flutter / src / gestures / binding.dart: 218: 19) E / flutter (11863): # 23 GestureBinding.dispatchEvent (пакет: flutter /src/gestures/binding.dart:198:22) E / flutter (11863): # 24 GestureBinding._handlePointerEvent (пакет: flutter / src / gestures / binding.dart: 156: 7) E / flutter (11863): # 25 GestureBinding._flushPointerEventQueue (пакет: flutter / src / gestures / binding.dart: 102: 7) E / flutter (11863): # 26 GestureBinding._handlePointerDataPacket (пакет: flutter / src / gestures / binding.dart: 86: 7) E / flutter (11863): # 27 _rootRunUnary (dart: async / zone.dart: 1196: 13) E / flutter (11863): # 28 _CustomZone.runUnary (dart: async / zone.dart: 1085: 19) E / flutter (11863): # 29 _CustomZone.runUnaryGuarded (dart: async / zone.dart: 987: 7) E / flutter (11863): # 30 _invoke1 (dart: ui / hooks.dart: 275: 10) E / flutter (11863): # 31 _dispatchPointerDataPacket (dart: ui / hooks.dart: 184: 5) E / flutter (11863):