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FutureBuilder Error #19952

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codeZee opened this issue Jul 29, 2018 · 4 comments
Closed

FutureBuilder Error #19952

codeZee opened this issue Jul 29, 2018 · 4 comments

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@codeZee
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codeZee commented Jul 29, 2018 •
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I/flutter (14827): ══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
I/flutter (14827): The following assertion was thrown building FutureBuilder<bool>(dirty, state:
I/flutter (14827): _FutureBuilderState<bool>#6904b):
I/flutter (14827): Failed assertion: boolean expression must not be null
I/flutter (14827): Either the assertion indicates an error in the framework itself, or we should provide substantially
I/flutter (14827): more information in this error message to help you determine and fix the underlying cause.
I/flutter (14827): In either case, please report this assertion by filing a bug on GitHub:
I/flutter (14827):   https://github.com/flutter/flutter/issues/new
I/flutter (14827): When the exception was thrown, this was the stack:
I/flutter (14827): #0      MyApp.build.<anonymous closure> (file:///Users/user/Documents/sellquick_app/lib/main.dart)
I/flutter (14827): #1      _FutureBuilderState.build (package:flutter/src/widgets/async.dart)
I/flutter (14827): #2      StatefulElement.build (package:flutter/src/widgets/framework.dart:3743:27)
I/flutter (14827): #3      ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3655:15)
I/flutter (14827): #4      Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #5      ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #6      StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3782:11)
I/flutter (14827): #7      ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #8      Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #9      Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #10     SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4667:14)
I/flutter (14827): #11     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #12     Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #13     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (14827): #14     Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #15     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #16     ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #17     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #18     Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #19     SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4667:14)
I/flutter (14827): #20     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #21     Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #22     SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4667:14)
I/flutter (14827): #23     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #24     Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #25     SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4667:14)
I/flutter (14827): #26     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #27     Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #28     SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4667:14)
I/flutter (14827): #29     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #30     Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #31     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (14827): #32     Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #33     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #34     StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3782:11)
I/flutter (14827): #35     ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #36     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #37     Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #38     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (14827): #39     Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #40     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #41     ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #42     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #43     Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #44     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (14827): #45     Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #46     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #47     StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3782:11)
I/flutter (14827): #48     ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #49     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #50     Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #51     SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4667:14)
I/flutter (14827): #52     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #53     Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #54     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (14827): #55     Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #56     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #57     ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #58     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #59     Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #60     SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4667:14)
I/flutter (14827): #61     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #62     Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #63     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (14827): #64     Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #65     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #66     StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3782:11)
I/flutter (14827): #67     ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #68     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #69     Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #70     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (14827): #71     Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #72     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #73     ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #74     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #75     Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #76     SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4667:14)
I/flutter (14827): #77     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #78     Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #79     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (14827): #80     Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #81     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #82     ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #83     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #84     Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #85     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (14827): #86     Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #87     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #88     StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3782:11)
I/flutter (14827): #89     ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #90     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #91     Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #92     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (14827): #93     Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #94     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #95     StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3782:11)
I/flutter (14827): #96     ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #97     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #98     MultiChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4772:32)
I/flutter (14827): #99     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #100    Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #101    _TheatreElement.mount (package:flutter/src/widgets/overlay.dart:493:16)
I/flutter (14827): #102    Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #103    Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #104    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (14827): #105    Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #106    ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #107    StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3782:11)
I/flutter (14827): #108    ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #109    Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #110    Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #111    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (14827): #112    Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #113    ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #114    ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #115    Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #116    Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #117    SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4667:14)
I/flutter (14827): #118    Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #119    Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #120    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (14827): #121    Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #122    ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #123    StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3782:11)
I/flutter (14827): #124    ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #125    Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #126    Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #127    SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4667:14)
I/flutter (14827): #128    Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #129    Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #130    SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4667:14)
I/flutter (14827): #131    Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #132    Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #133    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (14827): #134    Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #135    ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #136    StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3782:11)
I/flutter (14827): #137    ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #138    Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #139    Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #140    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (14827): #141    Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #142    ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #143    ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #144    Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #145    Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #146    SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4667:14)
I/flutter (14827): #147    Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #148    Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #149    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (14827): #150    Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #151    ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #152    ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #153    Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #154    Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #155    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (14827): #156    Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #157    ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #158    ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #159    Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #160    Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #161    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (14827): #162    Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #163    ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #164    ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #165    Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #166    Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #167    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (14827): #168    Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #169    ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #170    ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #171    Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #172    Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #173    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (14827): #174    Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #175    ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #176    ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #177    Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #178    Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #179    SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4667:14)
I/flutter (14827): #180    Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #181    Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #182    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (14827): #183    Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #184    ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #185    StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3782:11)
I/flutter (14827): #186    ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #187    Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #188    Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #189    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (14827): #190    Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #191    ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #192    ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #193    Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #194    Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #195    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (14827): #196    Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #197    ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #198    StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3782:11)
I/flutter (14827): #199    ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #200    Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #201    Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #202    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (14827): #203    Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #204    ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #205    ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #206    Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #207    Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #208    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (14827): #209    Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #210    ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #211    ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #212    Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #213    Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #214    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (14827): #215    Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #216    ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #217    ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #218    Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #219    Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #220    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (14827): #221    Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #222    ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #223    StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3782:11)
I/flutter (14827): #224    ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #225    Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #226    Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #227    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (14827): #228    Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #229    ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #230    ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #231    Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #232    Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #233    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (14827): #234    Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #235    ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #236    StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3782:11)
I/flutter (14827): #237    ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #238    Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #239    Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #240    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (14827): #241    Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (14827): #242    ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (14827): #243    ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
I/flutter (14827): #244    Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (14827): #245    Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (14827): #246    RenderObjectToWidgetElement._rebuild (package:flutter/src/widgets/binding.dart:857:16)
I/flutter (14827): #247    RenderObjectToWidgetElement.mount (package:flutter/src/widgets/binding.dart:828:5)
I/flutter (14827): #248    RenderObjectToWidgetAdapter.attachToRenderTree.<anonymous closure> (package:flutter/src/widgets/binding.dart:774:17)
I/flutter (14827): #249    BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2235:19)
I/flutter (14827): #250    RenderObjectToWidgetAdapter.attachToRenderTree (package:flutter/src/widgets/binding.dart:773:13)
I/flutter (14827): #251    _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&RendererBinding&WidgetsBinding.attachRootWidget (package:flutter/src/widgets/binding.dart:662:7)
I/flutter (14827): #252    runApp (package:flutter/src/widgets/binding.dart:704:7)
I/flutter (14827): #253    main (file:///Users/user/Documents/sellquick_app/lib/main.dart:13:16)
I/flutter (14827): #254    _startIsolate.<anonymous closure> (dart:isolate/runtime/libisolate_patch.dart:279:19)
I/flutter (14827): #255    _RawReceivePortImpl._handleMessage (dart:isolate/runtime/libisolate_patch.dart:165:12)
I/flutter (14827): ════════════════════════════════════════════════════════════════════════════════════════════════════
@zoechi
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zoechi commented Jul 29, 2018

That's very likely an issue with your code but it's hard to make suggestions without seeing the code.

In Dart variables of type bool can be null, but if(...) checks don't allow null, which might be the case in your code.

@zoechi zoechi added the waiting for customer response The Flutter team cannot make further progress on this issue until the original reporter responds label Jul 29, 2018
@codeZee
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codeZee commented Aug 15, 2018 •
edited by zoechi
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@zoechi here's my code snippet. Something wrong I didn't detect?

return new MaterialApp(
    ...
      home: new FutureBuilder<bool>(
          future: sessionManager.isLoggedIn(), //Async method (this returns false by default if null)
          builder: (BuildContext context, AsyncSnapshot<bool> isLoggedIn) {
            return isLoggedIn.data ? new MainPageWidget() : new IntroWidget();
          }),
...

@no-response no-response bot removed the waiting for customer response The Flutter team cannot make further progress on this issue until the original reporter responds label Aug 15, 2018
@zoechi
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zoechi commented Aug 15, 2018

Check the sample code in https://docs.flutter.io/flutter/widgets/FutureBuilder-class.html
You need to check connection states ConnectionState.....

Async method (this returns false by default if null)

Async methods complete delayed. Until it completes the builder: ... function needs to return valid widgets or it causes exceptions.

@zoechi zoechi closed this as completed Aug 15, 2018
@jonahwilliams jonahwilliams mentioned this issue Feb 9, 2019
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This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.

@github-actions github-actions bot locked as resolved and limited conversation to collaborators Sep 2, 2021
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@zoechi @codeZee