Failed assertion: line 357 pos 12: '_initialButtons == kPrimaryButton': is not true.

[qiuguian]

══╡ EXCEPTION CAUGHT BY GESTURE LIBRARY ╞═══════════════════════════════════════════════════════════
flutter: The following assertion was thrown while dispatching a pointer event:
flutter: 'package:flutter/src/gestures/monodrag.dart': Failed assertion: line 357 pos 12: '_initialButtons ==
flutter: kPrimaryButton': is not true.
flutter:
flutter: Either the assertion indicates an error in the framework itself, or we should provide substantially
flutter: more information in this error message to help you determine and fix the underlying cause.
flutter: In either case, please report this assertion by filing a bug on GitHub:
flutter: https://github.com/flutter/flutter/issues/new?template=BUG.md
flutter:
flutter: When the exception was thrown, this was the stack:
flutter: #2 DragGestureRecognizer._checkStart (package:flutter/src/gestures/monodrag.dart:357:12)
flutter: #3 DragGestureRecognizer.acceptGesture (package:flutter/src/gestures/monodrag.dart:298:7)
flutter: #4 GestureArenaManager.sweep (package:flutter/src/gestures/arena.dart:156:27)
flutter: #5 _WidgetsFlutterBinding&BindingBase&GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:222:20)
flutter: #6 _WidgetsFlutterBinding&BindingBase&GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:198:22)
flutter: #7 _WidgetsFlutterBinding&BindingBase&GestureBinding._handlePointerEvent (package:flutter/src/gestures/binding.dart:156:7)
flutter: #8 _WidgetsFlutterBinding&BindingBase&GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:102:7)
flutter: #9 _WidgetsFlutterBinding&BindingBase&GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:86:7)
flutter: #13 _invoke1 (dart:ui/hooks.dart:250:10)
flutter: #14 _dispatchPointerDataPacket (dart:ui/hooks.dart:159:5)
flutter: (elided 5 frames from class _AssertionError and package dart:async)
flutter:
flutter: Event:
flutter: PointerUpEvent#26b4d(position: Offset(362.0, 291.0), timeStamp: 51:01:43.942540, pointer: 97,
flutter: kind: touch, device: 4347396944, down: false, pressure: 0.1, pressureMin: 0.0, pressureMax: 6.7,
flutter: radiusMin: -1.8, radiusMax: 1.8, orientation: -1.6)
flutter: Target:
flutter:
flutter: ════════════════════════════════════════════════════════════════════════════════════════════════════
flutter: Another exception was thrown: 'package:flutter/src/gestures/monodrag.dart': Failed assertion: line 387 pos 12: '_initialButtons == kPrimaryButton': is not true.