The following _CastError was thrown building Builder: Null check operator used on a null value #10
Description
======== Exception caught by widgets library =======================================================
The following _CastError was thrown building Builder:
Null check operator used on a null value
The relevant error-causing widget was:
MaterialApp MaterialApp:file:///C:/Users/KIMO%20STORE/StudioProjects/untitled/lib/main.dart:17:12
When the exception was thrown, this was the stack:
#0 OpenAI.build (package:chat_gpt_sdk/src/openai.dart:59:58)
#1 ChatScreenState.initState (package:untitled/chat_screen.dart:25:31)
#2 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:5101:55)
#3 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4944:5)
... Normal element mounting (4 frames)
#7 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3953:16)
#8 Element.updateChild (package:flutter/src/widgets/framework.dart:3676:20)
#9 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4993:16)
#10 Element.rebuild (package:flutter/src/widgets/framework.dart:4690:5)
#11 StatelessElement.update (package:flutter/src/widgets/framework.dart:5044:5)
#12 Element.updateChild (package:flutter/src/widgets/framework.dart:3660:15)
#13 SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6384:14)
#14 Element.updateChild (package:flutter/src/widgets/framework.dart:3660:15)
#15 SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6384:14)
#16 Element.updateChild (package:flutter/src/widgets/framework.dart:3660:15)
#17 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4993:16)
#18 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5133:11)
#19 Element.rebuild (package:flutter/src/widgets/framework.dart:4690:5)
#20 StatefulElement.update (package:flutter/src/widgets/framework.dart:5156:5)
#21 Element.updateChild (package:flutter/src/widgets/framework.dart:3660:15)
#22 SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6384:14)
#23 Element.updateChild (package:flutter/src/widgets/framework.dart:3660:15)
#24 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4993:16)
#25 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5133:11)
#26 Element.rebuild (package:flutter/src/widgets/framework.dart:4690:5)
#27 StatefulElement.update (package:flutter/src/widgets/framework.dart:5156:5)
#28 Element.updateChild (package:flutter/src/widgets/framework.dart:3660:15)
#29 SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6384:14)
#30 Element.updateChild (package:flutter/src/widgets/framework.dart:3660:15)
#31 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4993:16)
#32 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5133:11)
#33 Element.rebuild (package:flutter/src/widgets/framework.dart:4690:5)
#34 StatefulElement.update (package:flutter/src/widgets/framework.dart:5156:5)
#35 Element.updateChild (package:flutter/src/widgets/framework.dart:3660:15)
#36 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4993:16)
#37 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5133:11)
#38 Element.rebuild (package:flutter/src/widgets/framework.dart:4690:5)
#39 StatefulElement.update (package:flutter/src/widgets/framework.dart:5156:5)
#40 Element.updateChild (package:flutter/src/widgets/framework.dart:3660:15)
#41 SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6384:14)
#42 Element.updateChild (package:flutter/src/widgets/framework.dart:3660:15)
#43 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4993:16)
#44 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5133:11)
#45 Element.rebuild (package:flutter/src/widgets/framework.dart:4690:5)
#46 StatefulElement.update (package:flutter/src/widgets/framework.dart:5156:5)
#47 Element.updateChild (package:flutter/src/widgets/framework.dart:3660:15)
#48 SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6384:14)
#49 Element.updateChild (package:flutter/src/widgets/framework.dart:3660:15)
#50 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4993:16)
#51 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5133:11)
#52 Element.rebuild (package:flutter/src/widgets/framework.dart:4690:5)
#53 StatefulElement.update (package:flutter/src/widgets/framework.dart:5156:5)
#54 Element.updateChild (package:flutter/src/widgets/framework.dart:3660:15)
#55 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4993:16)
#56 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5133:11)
#57 Element.rebuild (package:flutter/src/widgets/framework.dart:4690:5)
#58 StatefulElement.update (package:flutter/src/widgets/framework.dart:5156:5)
#59 Element.updateChild (package:flutter/src/widgets/framework.dart:3660:15)
#60 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4993:16)
#61 Element.rebuild (package:flutter/src/widgets/framework.dart:4690:5)
#62 StatelessElement.update (package:flutter/src/widgets/framework.dart:5044:5)
#63 Element.updateChild (package:flutter/src/widgets/framework.dart:3660:15)
#64 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4993:16)
#65 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5133:11)
#66 Element.rebuild (package:flutter/src/widgets/framework.dart:4690:5)
#67 StatefulElement.update (package:flutter/src/widgets/framework.dart:5156:5)
#68 Element.updateChild (package:flutter/src/widgets/framework.dart:3660:15)
#69 SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6384:14)
#70 Element.updateChild (package:flutter/src/widgets/framework.dart:3660:15)
#71 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4993:16)
#72 Element.rebuild (package:flutter/src/widgets/framework.dart:4690:5)
#73 ProxyElement.update (package:flutter/src/widgets/framework.dart:5301:5)
#74 _InheritedNotifierElement.update (package:flutter/src/widgets/inherited_notifier.dart:107:11)
#75 Element.updateChild (package:flutter/src/widgets/framework.dart:3660:15)
#76 SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6384:14)
#77 Element.updateChild (package:flutter/src/widgets/framework.dart:3660:15)
#78 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4993:16)
#79 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5133:11)
#80 Element.rebuild (package:flutter/src/widgets/framework.dart:4690:5)
#81 StatefulElement.update (package:flutter/src/widgets/framework.dart:5156:5)
#82 Element.updateChild (package:flutter/src/widgets/framework.dart:3660:15)
#83 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4993:16)
#84 Element.rebuild (package:flutter/src/widgets/framework.dart:4690:5)
#85 ProxyElement.update (package:flutter/src/widgets/framework.dart:5301:5)
#86 Element.updateChild (package:flutter/src/widgets/framework.dart:3660:15)
#87 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4993:16)
#88 Element.rebuild (package:flutter/src/widgets/framework.dart:4690:5)
#89 ProxyElement.update (package:flutter/src/widgets/framework.dart:5301:5)
#90 Element.updateChild (package:flutter/src/widgets/framework.dart:3660:15)
#91 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4993:16)
#92 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5133:11)
#93 Element.rebuild (package:flutter/src/widgets/framework.dart:4690:5)
#94 StatefulElement.update (package:flutter/src/widgets/framework.dart:5156:5)
#95 Element.updateChild (package:flutter/src/widgets/framework.dart:3660:15)
#96 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4993:16)
#97 Element.rebuild (package:flutter/src/widgets/framework.dart:4690:5)
#98 StatelessElement.update (package:flutter/src/widgets/framework.dart:5044:5)
#99 Element.updateChild (package:flutter/src/widgets/framework.dart:3660:15)
#100 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4993:16)
#101 Element.rebuild (package:flutter/src/widgets/framework.dart:4690:5)
#102 StatelessElement.update (package:flutter/src/widgets/framework.dart:5044:5)
#103 Element.updateChild (package:flutter/src/widgets/framework.dart:3660:15)
#104 SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6384:14)
#105 Element.updateChild (package:flutter/src/widgets/framework.dart:3660:15)
#106 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4993:16)
#107 Element.rebuild (package:flutter/src/widgets/framework.dart:4690:5)
#108 ProxyElement.update (package:flutter/src/widgets/framework.dart:5301:5)
#109 Element.updateChild (package:flutter/src/widgets/framework.dart:3660:15)
#110 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4993:16)
#111 Element.rebuild (package:flutter/src/widgets/framework.dart:4690:5)
#112 ProxyElement.update (package:flutter/src/widgets/framework.dart:5301:5)
#113 Element.updateChild (package:flutter/src/widgets/framework.dart:3660:15)
#114 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4993:16)
#115 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5133:11)
#116 Element.rebuild (package:flutter/src/widgets/framework.dart:4690:5)
#117 StatefulElement.update (package:flutter/src/widgets/framework.dart:5156:5)
#118 Element.updateChild (package:flutter/src/widgets/framework.dart:3660:15)
#119 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4993:16)
#120 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5133:11)
#121 Element.rebuild (package:flutter/src/widgets/framework.dart:4690:5)
#122 StatefulElement.update (package:flutter/src/widgets/framework.dart:5156:5)
#123 Element.updateChild (package:flutter/src/widgets/framework.dart:3660:15)
#124 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4993:16)
#125 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5133:11)
#126 Element.rebuild (package:flutter/src/widgets/framework.dart:4690:5)
#127 BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2743:19)
#128 WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:863:21)
#129 RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:381:5)
#130 SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1289:15)
#131 SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1218:9)
#132 SchedulerBinding.scheduleWarmUpFrame. (package:flutter/src/scheduler/binding.dart:942:7)
#136 _RawReceivePort._handleMessage (dart:isolate-patch/isolate_patch.dart:192:26)
(elided 3 frames from class _Timer and dart:async-patch)
Reloaded 2 of 1103 libraries in 1,676ms (compile: 45 ms, reload: 700 ms, reassemble: 754 ms).
W/1.raster( 8265): type=1400 audit(0.0:77353): avc: denied { search } for name="battery" dev="sysfs" ino=6689 scontext=u:r:untrusted_app:s0:c160,c256,c512,c768 tcontext=u:object_r:sysfs_batteryinfo:s0 tclass=dir permissive=0