flutter ‘owner!._debugCurrentBuildTarget == this’: is not true. I copy the android studio project and this error happned

So I copy the android studio flutter project (ctrl+c and ctrl+v) and I got some errors on original code which is not solvable, so then I opend this old project folder and suddely this error came. I got really stuck.

I had nothing inside this project then also it shows this error. Please anyone can guide me on this.
Please help me.

Thanks in advance.

    ======== Exception caught by widgets library 
    =======================================================
    The following NoSuchMethodError was thrown building MediaQuery(MediaQueryData(size: Size(360.0, 
780.0), devicePixelRatio: 3.0, textScaleFactor: 1.0, platformBrightness: Brightness.light, padding: EdgeInsets.zero, viewPadding: EdgeInsets.zero, viewInsets: EdgeInsets.zero, alwaysUse24HourFormat: false, accessibleNavigation: false, highContrast: false, disableAnimations: false, invertColors: false, boldText: false, navigationMode: traditional)):
The getter 'key' was called on null.

Receiver: null
Tried calling: key

The relevant error-causing widget was: 
  ListView file:///D:/flutter%20project/Memer%20app%20release%20No%20ads/memer/lib/pages/ProfilePage.dart:418:16
When the exception was thrown, this was the stack: 
#0      Object.noSuchMethod (dart:core-patch/object_patch.dart:54:5)
#1      SliverChildListDelegate.build (package:flutter/src/widgets/sliver.dart:722:28)
#2      SliverMultiBoxAdaptorElement._build (package:flutter/src/widgets/sliver.dart:1201:28)
#3      SliverMultiBoxAdaptorElement.performRebuild.processElement (package:flutter/src/widgets/sliver.dart:1145:67)
#4      Iterable.forEach (dart:core/iterable.dart:257:30)
...
====================================================================================================

======== Exception caught by widgets library =======================================================
A RenderSliverPadding expected a child of type RenderSliver but received a child of type RenderErrorBox.
The relevant error-causing widget was: 
  ListView file:///D:/flutter%20project/Memer%20app%20release%20No%20ads/memer/lib/pages/ProfilePage.dart:418:16
====================================================================================================
W/com.hp.memer( 8537): Accessing hidden method Lsun/misc/Unsafe;->putLong(Ljava/lang/Object;JJ)V (greylist, linking, allowed)

======== Exception caught by widgets library =======================================================
'package:flutter/src/widgets/framework.dart': Failed assertion: line 4191 pos 14: 'owner!._debugCurrentBuildTarget == this': is not true.
The relevant error-causing widget was: 
  ListView file:///D:/flutter%20project/Memer%20app%20release%20No%20ads/memer/lib/pages/ProfilePage.dart:418:16
====================================================================================================

======== Exception caught by widgets library =======================================================
'package:flutter/src/widgets/framework.dart': Failed assertion: line 4191 pos 14: 'owner!._debugCurrentBuildTarget == this': is not true.
The relevant error-causing widget was: 
  ListView file:///D:/flutter%20project/Memer%20app%20release%20No%20ads/memer/lib/pages/ProfilePage.dart:418:16
====================================================================================================

======== Exception caught by widgets library =======================================================
'package:flutter/src/widgets/framework.dart': Failed assertion: line 4191 pos 14: 'owner!._debugCurrentBuildTarget == this': is not true.
The relevant error-causing widget was: 
  ListView file:///D:/flutter%20project/Memer%20app%20release%20No%20ads/memer/lib/pages/ProfilePage.dart:418:16
====================================================================================================

======== Exception caught by widgets library =======================================================
'package:flutter/src/widgets/framework.dart': Failed assertion: line 4191 pos 14: 'owner!._debugCurrentBuildTarget == this': is not true.
The relevant error-causing widget was: 
  ListView file:///D:/flutter%20project/Memer%20app%20release%20No%20ads/memer/lib/pages/ProfilePage.dart:418:16
====================================================================================================

======== Exception caught by widgets library =======================================================
'package:flutter/src/widgets/framework.dart': Failed assertion: line 4191 pos 14: 'owner!._debugCurrentBuildTarget == this': is not true.
The relevant error-causing widget was: 
  ListView file:///D:/flutter%20project/Memer%20app%20release%20No%20ads/memer/lib/pages/ProfilePage.dart:418:16
====================================================================================================

======== Exception caught by widgets library =======================================================
'package:flutter/src/widgets/framework.dart': Failed assertion: line 4191 pos 14: 'owner!._debugCurrentBuildTarget == this': is not true.
The relevant error-causing widget was: 
  RefreshIndicator file:///D:/flutter%20project/Memer%20app%20release%20No%20ads/memer/lib/pages/ProfilePage.dart:416:7
====================================================================================================

======== Exception caught by widgets library =======================================================
'package:flutter/src/widgets/framework.dart': Failed assertion: line 4191 pos 14: 'owner!._debugCurrentBuildTarget == this': is not true.
The relevant error-causing widget was: 
  RefreshIndicator file:///D:/flutter%20project/Memer%20app%20release%20No%20ads/memer/lib/pages/ProfilePage.dart:416:7
====================================================================================================

======== Exception caught by widgets library =======================================================
'package:flutter/src/widgets/framework.dart': Failed assertion: line 4191 pos 14: 'owner!._debugCurrentBuildTarget == this': is not true.
The relevant error-causing widget was: 
  RefreshIndicator file:///D:/flutter%20project/Memer%20app%20release%20No%20ads/memer/lib/pages/ProfilePage.dart:416:7
====================================================================================================

======== Exception caught by widgets library =======================================================
'package:flutter/src/widgets/framework.dart': Failed assertion: line 4191 pos 14: 'owner!._debugCurrentBuildTarget == this': is not true.
The relevant error-causing widget was: 
  Scaffold file:///D:/flutter%20project/Memer%20app%20release%20No%20ads/memer/lib/pages/ProfilePage.dart:413:12
====================================================================================================

======== Exception caught by widgets library =======================================================
'package:flutter/src/widgets/framework.dart': Failed assertion: line 4191 pos 14: 'owner!._debugCurrentBuildTarget == this': is not true.
The relevant error-causing widget was: 
  Scaffold file:///D:/flutter%20project/Memer%20app%20release%20No%20ads/memer/lib/pages/ProfilePage.dart:413:12
====================================================================================================

======== Exception caught by widgets library =======================================================
'package:flutter/src/widgets/framework.dart': Failed assertion: line 4191 pos 14: 'owner!._debugCurrentBuildTarget == this': is not true.
The relevant error-causing widget was: 
  Scaffold file:///D:/flutter%20project/Memer%20app%20release%20No%20ads/memer/lib/pages/ProfilePage.dart:413:12
====================================================================================================

======== Exception caught by widgets library =======================================================
'package:flutter/src/widgets/framework.dart': Failed assertion: line 4191 pos 14: 'owner!._debugCurrentBuildTarget == this': is not true.
The relevant error-causing widget was: 
  Scaffold file:///D:/flutter%20project/Memer%20app%20release%20No%20ads/memer/lib/pages/ProfilePage.dart:413:12
====================================================================================================

======== Exception caught by widgets library =======================================================
'package:flutter/src/widgets/framework.dart': Failed assertion: line 4191 pos 14: 'owner!._debugCurrentBuildTarget == this': is not true.
The relevant error-causing widget was: 
  Scaffold file:///D:/flutter%20project/Memer%20app%20release%20No%20ads/memer/lib/pages/ProfilePage.dart:413:12
====================================================================================================

======== Exception caught by widgets library =======================================================
'package:flutter/src/widgets/framework.dart': Failed assertion: line 4191 pos 14: 'owner!._debugCurrentBuildTarget == this': is not true.
The relevant error-causing widget was: 
  Scaffold file:///D:/flutter%20project/Memer%20app%20release%20No%20ads/memer/lib/pages/ProfilePage.dart:413:12
====================================================================================================
W/com.hp.memer( 8537): Accessing hidden method Lsun/misc/Unsafe;->putLong(Ljava/lang/Object;JJ)V (greylist, linking, allowed)

======== Exception caught by widgets library =======================================================
'package:flutter/src/widgets/framework.dart': Failed assertion: line 4191 pos 14: 'owner!._debugCurrentBuildTarget == this': is not true.
The relevant error-causing widget was: 
  Scaffold file:///D:/flutter%20project/Memer%20app%20release%20No%20ads/memer/lib/pages/ProfilePage.dart:413:12
====================================================================================================

======== Exception caught by widgets library =======================================================
'package:flutter/src/widgets/framework.dart': Failed assertion: line 4191 pos 14: 'owner!._debugCurrentBuildTarget == this': is not true.
The relevant error-causing widget was: 
  Scaffold file:///D:/flutter%20project/Memer%20app%20release%20No%20ads/memer/lib/pages/ProfilePage.dart:413:12
====================================================================================================

======== Exception caught by widgets library =======================================================
'package:flutter/src/widgets/framework.dart': Failed assertion: line 4191 pos 14: 'owner!._debugCurrentBuildTarget == this': is not true.
The relevant error-causing widget was: 
  Scaffold file:///D:/flutter%20project/Memer%20app%20release%20No%20ads/memer/lib/pages/ProfilePage.dart:413:12
====================================================================================================

======== Exception caught by widgets library =======================================================
'package:flutter/src/widgets/framework.dart': Failed assertion: line 4191 pos 14: 'owner!._debugCurrentBuildTarget == this': is not true.
The relevant error-causing widget was: 
  Scaffold file:///D:/flutter%20project/Memer%20app%20release%20No%20ads/memer/lib/pages/ProfilePage.dart:413:12
====================================================================================================

======== Exception caught by widgets library =======================================================
'package:flutter/src/widgets/framework.dart': Failed assertion: line 4191 pos 14: 'owner!._debugCurrentBuildTarget == this': is not true.
The relevant error-causing widget was: 
  Scaffold file:///D:/flutter%20project/Memer%20app%20release%20No%20ads/memer/lib/pages/ProfilePage.dart:413:12
====================================================================================================

======== Exception caught by widgets library =======================================================
'package:flutter/src/widgets/framework.dart': Failed assertion: line 4191 pos 14: 'owner!._debugCurrentBuildTarget == this': is not true.
The relevant error-causing widget was: 
  ProfilePage file:///D:/flutter%20project/Memer%20app%20release%20No%20ads/memer/lib/pages/SearchPage.dart:336:69
====================================================================================================

======== Exception caught by widgets library =======================================================
'package:flutter/src/widgets/framework.dart': Failed assertion: line 4191 pos 14: 'owner!._debugCurrentBuildTarget == this': is not true.
The relevant error-causing widget was: 
  ProfilePage file:///D:/flutter%20project/Memer%20app%20release%20No%20ads/memer/lib/pages/SearchPage.dart:336:69
===================================================================================================