From crash:

NoSuchMethodError: The getter 'pointer' was called on null.
#0      PointerEventConverter.expand (package:flutter/src/gestures/converter.dart:254)
#1      _SyncIterator.moveNext (dart:core-patch/core_patch.dart:144)
#2      ListQueue.addAll (dart:collection/queue.dart:655)
#3      _WidgetsFlutterBinding&BindingBase&GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:84)
#4      _rootRunUnary (dart:async/zone.dart:1136)
#5      _CustomZone.runUnary (dart:async/zone.dart:1029)
#6      _CustomZone.runUnaryGuarded (dart:async/zone.dart:931)
#7      _invoke1 (dart:ui/hooks.dart:252)
#8      _dispatchPointerDataPacket (dart:ui/hooks.dart:161)