Error: This widget has been unmounted, so the State no longer has a context.

[amrogad]

======== Exception caught by foundation library ====================================================
The following assertion was thrown while dispatching notifications for AdvancedDrawerController:
This widget has been unmounted, so the State no longer has a context (and should be considered defunct). 

Consider canceling any active work during "dispose" or using the "mounted" getter to determine if the State is still active.
When the exception was thrown, this was the stack: 
#0      State.context.<anonymous closure> (package:flutter/src/widgets/framework.dart:951:9)
#1      State.context (package:flutter/src/widgets/framework.dart:957:6)
#2      _AdvancedDrawerState._handleControllerChanged (package:flutter_advanced_drawer/src/widget.dart:250:7)
#3      ChangeNotifier.notifyListeners (package:flutter/src/foundation/change_notifier.dart:433:24)
#4      ValueNotifier.value= (package:flutter/src/foundation/change_notifier.dart:555:5)
#5      AdvancedDrawerController.showDrawer (package:flutter_advanced_drawer/src/controller.dart:11:5)
#6      HomeView.build.<anonymous closure> (package:smarterblinds/widgets/scaffolds/home.dart:66:84)
#7      _InkResponseState.handleTap (package:flutter/src/material/ink_well.dart:1183:21)
#8      GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:315:24)
#9      TapGestureRecognizer.handleTapUp (package:flutter/src/gestures/tap.dart:652:11)
#10     BaseTapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:309:5)
#11     BaseTapGestureRecognizer.acceptGesture (package:flutter/src/gestures/tap.dart:279:7)
#12     GestureArenaManager.sweep (package:flutter/src/gestures/arena.dart:167:27)
#13     GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:499:20)
#14     GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:475:22)
#15     RendererBinding.dispatchEvent (package:flutter/src/rendering/binding.dart:430:11)
#16     GestureBinding._handlePointerEventImmediately (package:flutter/src/gestures/binding.dart:420:7)
#17     GestureBinding.handlePointerEvent (package:flutter/src/gestures/binding.dart:383:5)
#18     GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:330:7)
#19     GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:299:9)
#20     _invoke1 (dart:ui/hooks.dart:328:13)
#21     PlatformDispatcher._dispatchPointerDataPacket (dart:ui/platform_dispatcher.dart:429:7)
#22     _dispatchPointerDataPacket (dart:ui/hooks.dart:262:31)
The AdvancedDrawerController sending notification was: AdvancedDrawerController#0459d(Instance of 'AdvancedDrawerValue')
====================================================================================================

even though in the new package version context is mounted in _HandleControllerChanged I still get the error

void _handleControllerChanged() {
    // Check if the widget is still mounted
    if (context.mounted) {
      // If the value of _controller is visible, forward the animation; otherwise, reverse it
      _controller.value.visible ? _animationController.forward() : _animationController.reverse();
    }
  }

[amrogad]

https://github.com/amrogad/flutter_advanced_drawer

fixed in this fork

[alex-melnyk]

https://github.com/amrogad/flutter_advanced_drawer

fixed in this fork

If you do PR than I can merge and release the next version