问题反馈

[yuanlulucode]

Null check operator used on a null value
#0 _AnimatedFadeOutFadeInState.build (package:flutter/src/widgets/fade_in_image.dart:542:70)
#1 StatefulElement.build (package:flutter/src/widgets/framework.dart:4992:27)
#2 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4878:15)
#3 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5050:11)
#4 Element.rebuild (package:flutter/src/widgets/framework.dart:4604:5)
#5 StatefulElement.update (package:flutter/src/widgets/framework.dart:5082:5)
#6 Element.updateChild (package:flutter/src/widgets/framework.dart:3570:15)
#7 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4904:16)
#8 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5050:11)
#9 Element.rebuild (package:flutter/src/widgets/framework.dart:4604:5)
#10 BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2667:19)
#11 WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:882:21)
#12 SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1175:15)
#13 SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1104:9)
#14 _rootRun (dart:async/zone.dart:1391:13)
#15 _CustomZone.run (dart:async/zone.dart:1293:19)
#16 _CustomZone.runGuarded (dart:async/zone.dart:1201:7)