Error

Launching lib\main.dart on Android SDK built for x86 in debug mode...
registerResGeneratingTask is deprecated, use registerGeneratedResFolders(FileCollection)
registerResGeneratingTask is deprecated, use registerGeneratedResFolders(FileCollection)
registerResGeneratingTask is deprecated, use registerGeneratedResFolders(FileCollection)
√ Built build\app\outputs\apk\debug\app-debug.apk.
D/EGL_emulation(10316): eglMakeCurrent: 0xdd80c200: ver 2 0 (tinfo 0xd21c9880)
D/eglCodecCommon(10316): setVertexArrayObject: set vao to 0 (0) 1 0
W/IInputConnectionWrapper(10316): getTextBeforeCursor on inactive InputConnection
W/IInputConnectionWrapper(10316): getSelectedText on inactive InputConnection
W/IInputConnectionWrapper(10316): getTextAfterCursor on inactive InputConnection
W/IInputConnectionWrapper(10316): beginBatchEdit on inactive InputConnection
W/IInputConnectionWrapper(10316): endBatchEdit on inactive InputConnection
I/flutter (10316): Email: null, Password: 123456
D/permissions_handler(10316): No permissions found in manifest for: 7
D/SpeechRecognitionPlugin(10316): Current Locale : en_US

════════ Exception caught by rendering library ═════════════════════════════════
The following assertion was thrown during performResize():
Horizontal viewport was given unbounded height.

Viewports expand in the cross axis to fill their container and constrain their children to match their extent in the cross axis. In this case, a horizontal viewport was given an unlimited amount of vertical space in which to expand.
The relevant error-causing widget was
    TabBarView
When the exception was thrown, this was the stack
#0      RenderViewport.performResize.<anonymous closure>
#1      RenderViewport.performResize
#2      RenderObject.layout
#3      RenderProxyBoxMixin.performLayout
#4      RenderObject.layout
...
The following RenderObject was being processed when the exception was fired: RenderViewport#c7ee4 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
RenderObject: RenderViewport#c7ee4 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
    needs compositing
    parentData: <none> (can use size)
    constraints: BoxConstraints(w=392.7, 0.0<=h<=Infinity)
    size: MISSING
    axisDirection: right
    crossAxisDirection: down
    offset: _PagePosition#5554c(offset: null, range: null..null, viewport: null, ScrollableState, _ForceImplicitScrollPhysics -> PageScrollPhysics -> PageScrollPhysics -> ClampingScrollPhysics -> ClampingScrollPhysics, IdleScrollActivity#c9996, ScrollDirection.idle)
    anchor: 0.0
    center child: _RenderSliverFractionalPadding#e5139 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
        parentData: paintOffset=Offset(0.0, 0.0)
        constraints: MISSING
        geometry: null
        child: RenderSliverFillViewport#33b76 NEEDS-LAYOUT NEEDS-PAINT
            parentData: paintOffset=Offset(0.0, 0.0)
            constraints: MISSING
            geometry: null
            no children current live
════════════════════════════════════════════════════════════════════════════════

════════ Exception caught by rendering library ═════════════════════════════════
RenderBox was not laid out: RenderViewport#c7ee4 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
'package:flutter/src/rendering/box.dart':
Failed assertion: line 1694 pos 12: 'hasSize'
The relevant error-causing widget was
    TabBarView
════════════════════════════════════════════════════════════════════════════════

════════ Exception caught by rendering library ═════════════════════════════════
RenderBox was not laid out: RenderViewport#c7ee4 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
'package:flutter/src/rendering/box.dart':
Failed assertion: line 1694 pos 12: 'hasSize'
The relevant error-causing widget was
    TabBarView
════════════════════════════════════════════════════════════════════════════════

════════ Exception caught by rendering library ═════════════════════════════════
RenderBox was not laid out: RenderIgnorePointer#734c3 relayoutBoundary=up10 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
'package:flutter/src/rendering/box.dart':
Failed assertion: line 1694 pos 12: 'hasSize'
The relevant error-causing widget was
    TabBarView
════════════════════════════════════════════════════════════════════════════════

════════ Exception caught by rendering library ═════════════════════════════════
RenderBox was not laid out: RenderSemanticsAnnotations#e090b relayoutBoundary=up9 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
'package:flutter/src/rendering/box.dart':
Failed assertion: line 1694 pos 12: 'hasSize'
The relevant error-causing widget was
    TabBarView
════════════════════════════════════════════════════════════════════════════════

════════ Exception caught by rendering library ═════════════════════════════════
RenderBox was not laid out: RenderPointerListener#47ab2 relayoutBoundary=up8 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
'package:flutter/src/rendering/box.dart':
Failed assertion: line 1694 pos 12: 'hasSize'
The relevant error-causing widget was
    TabBarView
════════════════════════════════════════════════════════════════════════════════

════════ Exception caught by rendering library ═════════════════════════════════
RenderBox was not laid out: RenderSemanticsGestureHandler#39eee relayoutBoundary=up7 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
'package:flutter/src/rendering/box.dart':
Failed assertion: line 1694 pos 12: 'hasSize'
The relevant error-causing widget was
    TabBarView
════════════════════════════════════════════════════════════════════════════════

════════ Exception caught by rendering library ═════════════════════════════════
RenderBox was not laid out: RenderPointerListener#cf4eb relayoutBoundary=up6 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
'package:flutter/src/rendering/box.dart':
Failed assertion: line 1694 pos 12: 'hasSize'
The relevant error-causing widget was
    TabBarView
════════════════════════════════════════════════════════════════════════════════

════════ Exception caught by rendering library ═════════════════════════════════
RenderBox was not laid out: _RenderScrollSemantics#e2aec relayoutBoundary=up5 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
'package:flutter/src/rendering/box.dart':
Failed assertion: line 1694 pos 12: 'hasSize'
The relevant error-causing widget was
    TabBarView
════════════════════════════════════════════════════════════════════════════════

════════ Exception caught by rendering library ═════════════════════════════════
RenderBox was not laid out: RenderRepaintBoundary#198dd relayoutBoundary=up4 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
'package:flutter/src/rendering/box.dart':
Failed assertion: line 1694 pos 12: 'hasSize'
The relevant error-causing widget was
    TabBarView
════════════════════════════════════════════════════════════════════════════════

════════ Exception caught by rendering library ═════════════════════════════════
RenderBox was not laid out: RenderCustomPaint#52767 relayoutBoundary=up3 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
'package:flutter/src/rendering/box.dart':
Failed assertion: line 1694 pos 12: 'hasSize'
The relevant error-causing widget was
    TabBarView
════════════════════════════════════════════════════════════════════════════════

════════ Exception caught by rendering library ═════════════════════════════════
RenderBox was not laid out: RenderRepaintBoundary#9ce18 relayoutBoundary=up2 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
'package:flutter/src/rendering/box.dart':
Failed assertion: line 1694 pos 12: 'hasSize'
The relevant error-causing widget was
    SliverToBoxAdapter
════════════════════════════════════════════════════════════════════════════════

════════ Exception caught by rendering library ═════════════════════════════════
The method 'debugAssertIsValid' was called on null.
Receiver: null
Tried calling: debugAssertIsValid()
The relevant error-causing widget was
    CustomScrollView
════════════════════════════════════════════════════════════════════════════════
D/permissions_handler(10316): No permissions found in manifest for: 7
I/flutter (10316): _platformCallHandler call speech.onCurrentLocale en_US
I/flutter (10316): current locale: en_US
E/flutter (10316): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: NoSuchMethodError: Class 'Future<dynamic>' has no instance method 'contains'.
E/flutter (10316): Receiver: Instance of 'Future<dynamic>'
E/flutter (10316): Tried calling: contains(null)
E/flutter (10316): #0      Object.noSuchMethod  (dart:core-patch/object_patch.dart:53:5)
E/flutter (10316): #1      LoginPage._authUserLogin.<anonymous closure>
E/flutter (10316): #2      _AsyncAwaitCompleter.start  (dart:async-patch/async_patch.dart:47:6)
E/flutter (10316): #3      LoginPage._authUserLogin.<anonymous closure>
E/flutter (10316): #4      _rootRunUnary  (dart:async/zone.dart:1134:38)
E/flutter (10316): #5      _CustomZone.runUnary  (dart:async/zone.dart:1031:19)
E/flutter (10316): #6      _FutureListener.handleValue  (dart:async/future_impl.dart:140:18)
E/flutter (10316): #7      Future._propagateToListeners.handleValueCallback  (dart:async/future_impl.dart:682:45)
E/flutter (10316): #8      Future._propagateToListeners  (dart:async/future_impl.dart:711:32)
E/flutter (10316): #9      Future._complete  (dart:async/future_impl.dart:516:7)
E/flutter (10316): #10     new Future.delayed.<anonymous closure>  (dart:async/future.dart:313:16)
E/flutter (10316): #11     _rootRun  (dart:async/zone.dart:1122:38)
E/flutter (10316): #12     _CustomZone.run  (dart:async/zone.dart:1023:19)
E/flutter (10316): #13     _CustomZone.runGuarded  (dart:async/zone.dart:925:7)
E/flutter (10316): #14     _CustomZone.bindCallbackGuarded.<anonymous closure>  (dart:async/zone.dart:965:23)
E/flutter (10316): #15     _rootRun  (dart:async/zone.dart:1126:13)
E/flutter (10316): #16     _CustomZone.run  (dart:async/zone.dart:1023:19)
E/flutter (10316): #17     _CustomZone.bindCallback.<anonymous closure>  (dart:async/zone.dart:949:23)
E/flutter (10316): #18     Timer._createTimer.<anonymous closure>  (dart:async-patch/timer_patch.dart:23:15)
E/flutter (10316): #19     _Timer._runTimers  (dart:isolate-patch/timer_impl.dart:398:19)
E/flutter (10316): #20     _Timer._handleMessage  (dart:isolate-patch/timer_impl.dart:429:5)
E/flutter (10316): #21     _RawReceivePortImpl._handleMessage  (dart:isolate-patch/isolate_patch.dart:168:12)
E/flutter (10316):

════════ Exception caught by rendering library ═════════════════════════════════
The method 'debugAssertIsValid' was called on null.
Receiver: null
Tried calling: debugAssertIsValid()
The relevant error-causing widget was
    CustomScrollView
════════════════════════════════════════════════════════════════════════════════

════════ Exception caught by rendering library ═════════════════════════════════
The getter 'visible' was called on null.
Receiver: null
Tried calling: visible
The relevant error-causing widget was
    CustomScrollView
════════════════════════════════════════════════════════════════════════════════
I/flutter (10316): 200
I/flutter (10316): [{"id":8,"name":"Nicholas Runolfsdottir V","username":"Maxime_Nienow","email":"Sherwood@rosamond.me","password":"UA2gH3"},{"id":9,"name":"Glenna Reichert","username":"Delphine","email":"Chaim_McDermott@dana.io","password":"Brw31K"},{"id":10,"name":"Clementina DuBuque","username":"Moriah.Stanton","email":"Rey.Padberg@karina.biz","password":"8px8F9"},{"id":11,"name":"Omar Yehia Tawfeek","username":"OmarYehiaDev","email":"OmarYehiaDev@e-soor.com","password":"123456"},{"id":12,"name":"Ahmed Tarek Mousa","username":"JavTh0n","email":"JavTh0n@e-soor.com","password":"213456"}]
I/flutter (10316): [Instance of 'User', Instance of 'User', Instance of 'User', Instance of 'User', Instance of 'User']