The relevant error-causing widget was:

[2000zua]

══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
The following _TypeError was thrown building StreamBuilder<OperationResponse<GgetMeData,
GgetMeVars>>(dirty, state: _StreamBuilderBaseState<OperationResponse<GgetMeData, GgetMeVars>,
AsyncSnapshot<OperationResponse<GgetMeData, GgetMeVars>>>#aa6e0):
Null check operator used on a null value

The relevant error-causing widget was:
StreamBuilder<OperationResponse<GgetMeData, GgetMeVars>>
StreamBuilder:file:///home/angelo/.pub-cache/hosted/pub.dev/ferry_flutter-0.9.0-dev.3/lib/src/operation.dart:47:12

When the exception was thrown, this was the stack:
#0 MyProfileScreenState.build. (package:sale_app/app/page/MyProfileScreen.dart:54:29)
#1 _OperationState.build. (package:ferry_flutter/src/operation.dart:53:53)
#2 StreamBuilder.build (package:flutter/src/widgets/async.dart:437:81)
#3 _StreamBuilderBaseState.build (package:flutter/src/widgets/async.dart:120:48)
#4 StatefulElement.build (package:flutter/src/widgets/framework.dart:5592:27)
#5 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5480:15)
#6 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5643:11)
#7 Element.rebuild (package:flutter/src/widgets/framework.dart:5196:7)
#8 BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2904:19)
#9 WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:989:21)
#10 RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:448:5)
#11 SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1386:15)
#12 SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1311:9)
#13 SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:1169:5)
#14 _invoke (dart:ui/hooks.dart:312:13)
#15 PlatformDispatcher._drawFrame (dart:ui/platform_dispatcher.dart:399:5)
#16 _drawFrame (dart:ui/hooks.dart:283:31)