Null check operator used on a null value

[maitycyrus]

`======== Exception caught by gesture =============================================================== The following _CastError was thrown while handling a gesture: Null check operator used on a null value

When the exception was thrown, this was the stack:

0 _PersistentTabViewState.popAllScreens (package:persistent_bottom_nav_bar/persistent-tab-view.widget.dart:732:45)

1 _PersistentTabViewState.navigationBarWidget. (package:persistent_bottom_nav_bar/persistent-tab-view.widget.dart:601:25)

2 _BottomNavStyle12State.build.. (package:persistent_bottom_nav_bar/nav-bar-styles/style-12-bottom-nav-bar.widget.dart:177:59)

3 GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:198:24)

4 TapGestureRecognizer.handleTapUp (package:flutter/src/gestures/tap.dart:608:11)

5 BaseTapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:296:5)

6 BaseTapGestureRecognizer.acceptGesture (package:flutter/src/gestures/tap.dart:267:7)

7 GestureArenaManager.sweep (package:flutter/src/gestures/arena.dart:157:27)

8 GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:443:20)

9 GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:419:22)

10 RendererBinding.dispatchEvent (package:flutter/src/rendering/binding.dart:322:11)

11 GestureBinding._handlePointerEventImmediately (package:flutter/src/gestures/binding.dart:374:7)

12 GestureBinding.handlePointerEvent (package:flutter/src/gestures/binding.dart:338:5)

13 GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:296:7)

14 GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:279:7)

18 _invoke1 (dart:ui/hooks.dart:170:10)

19 PlatformDispatcher._dispatchPointerDataPacket (dart:ui/platform_dispatcher.dart:331:7)

20 _dispatchPointerDataPacket (dart:ui/hooks.dart:94:31)

(elided 3 frames from dart:async) Handler: "onTap" Recognizer: TapGestureRecognizer#a7603 debugOwner: GestureDetector state: ready won arena finalPosition: Offset(184.0, 629.5) finalLocalPosition: Offset(28.8, 19.1) button: 1 sent tap down =======================`

[maitycyrus]

_contextList is non-nullable

[alexaung]

How do you solve this issue? I am also facing it

[kubawich]

@maitycyrus Hey, how did You fix this?

[hortigado]

I have the same problem