问带滚动视图返回家乡时出错

EN

======== Exception caught by gesture ===============================================================
The following assertion was thrown while handling a gesture: ScrollController attached to multiple scroll views. 'package:flutter/src/widgets/scroll_controller.dart': Failed assertion: line 108 pos 12: '_positions.length == 1'

Either the assertion indicates an error in the framework itself, or we should provide substantially more information in this error message to help you determine and fix the underlying cause. In either case, please report this assertion by filing a bug on GitHub: https://github.com/flutter/flutter/issues/new?template=2_bug.md

When the exception was thrown, this was the stack: 
#2 ScrollController.position (package:flutter/src/widgets/scroll_controller.dart:108:12) 
#3 PageController.animateToPage (package:flutter/src/widgets/page_view.dart:197:41) 
#4 ServicesProvider.selectCategory (package:agenda_booking/providers/servides_provider.dart:73:21) 
#5 _CategoriesCarousel.build.. (package:agenda_booking/pages/home_page.dart:212:45) 
#6 _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:1005:21) 
#7 GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:198:24) 
#8 TapGestureRecognizer.handleTapUp (package:flutter/src/gestures/tap.dart:613:11) 
#9 BaseTapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:298:5) 
#10 BaseTapGestureRecognizer.acceptGesture (package:flutter/src/gestures/tap.dart:269:7) 
#11 GestureArenaManager.sweep (package:flutter/src/gestures/arena.dart:157:27) 
#12 GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:449:20) 
#13 GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:425:22) 
#14 RendererBinding.dispatchEvent (package:flutter/src/rendering/binding.dart:329:11) 
#15 GestureBinding._handlePointerEventImmediately (package:flutter/src/gestures/binding.dart:380:7) 
#16 GestureBinding.handlePointerEvent (package:flutter/src/gestures/binding.dart:344:5) 
#17 GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:302:7) 
#18 GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:285:7) 
#22 _invoke1 (dart:ui/hooks.dart:170:10) 
#23 PlatformDispatcher._dispatchPointerDataPacket (dart:ui/platform_dispatcher.dart:331:7) 
#24 _dispatchPointerDataPacket (dart:ui/hooks.dart:94:31) (elided 5 frames from class _AssertionError and dart:async) Handler: "onTap" Recognizer: TapGestureRecognizer#340e5 debugOwner: GestureDetector state: ready won arena finalPosition: Offset(105.0, 340.0) finalLocalPosition: Offset(20.0, 42.0) button: 1 sent tap down.