PlatformException(500, ownerAccount must not be null, null, null)

[SungHyun22]

I installed device_calendar-4.2.0 example app. and I got this exception on the SM-G960N.

Flutter doctor

[√] Flutter (Channel stable, 3.0.0, on Microsoft Windows [Version 10.0.19043.1645], locale ko-KR) • Flutter version 3.0.0 at C:\Users\LEE\flutter • Upstream repository https://github.com/flutter/flutter.git • Framework revision ee4e09cce0 (11 days ago), 2022-05-09 16:45:18 -0700 • Engine revision d1b9a6938a • Dart version 2.17.0 • DevTools version 2.12.2

[√] Android toolchain - develop for Android devices (Android SDK version 30.0.3) • Android SDK at C:\Users\LEE\AppData\Local\Android\Sdk • Platform android-Tiramisu, build-tools 30.0.3 • ANDROID_HOME = C:\Users\LEE\AppData\Local\Android\Sdk • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java • Java version OpenJDK Runtime Environment (build 11.0.12+7-b1504.28-7817840) • All Android licenses accepted.

[√] Chrome - develop for the web • Chrome at C:\Program Files (x86)\Google\Chrome\Application\chrome.exe

[√] Visual Studio - develop for Windows (Visual Studio Community 2019 16.5.2) • Visual Studio at C:\Program Files (x86)\Microsoft Visual Studio\2019\Community • Visual Studio Community 2019 version 16.5.29926.136 • Windows 10 SDK version 10.0.18362.0

[√] Android Studio (version 2021.2) • Android Studio at C:\Program Files\Android\Android Studio • Flutter plugin can be installed from: https://plugins.jetbrains.com/plugin/9212-flutter • Dart plugin can be installed from: https://plugins.jetbrains.com/plugin/6351-dart • Java version OpenJDK Runtime Environment (build 11.0.12+7-b1504.28-7817840)

[√] IntelliJ IDEA Community Edition (version 2019.3) • IntelliJ at C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2019.3.4 • Flutter plugin can be installed from: https://plugins.jetbrains.com/plugin/9212-flutter • Dart plugin can be installed from: https://plugins.jetbrains.com/plugin/6351-dart

[√] VS Code (version 1.67.2) • VS Code at C:\Users\LEE\AppData\Local\Programs\Microsoft VS Code • Flutter extension version 3.40.0

[√] Connected device (3 available) • Windows (desktop) • windows • windows-x64 • Microsoft Windows [Version 10.0.19043.1645] • Chrome (web) • chrome • web-javascript • Google Chrome 101.0.4951.67 • Edge (web) • edge • web-javascript • Microsoft Edge 101.0.1210.32

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error log

I/flutter (23494): PlatformException(500, ownerAccount must not be null, null, null) I/OpenGLRenderer(23494): doUpdatePositionAsync is called and callVoidMethod E/flutter (23494): [ERROR:flutter/lib/ui/ui_dart_state.cc(198)] Unhandled Exception: type 'Null' is not a subtype of type 'List' in type cast E/flutter (23494): #0 _CalendarsPageState._retrieveCalendars. package:device_calendar_example/…/pages/calendars.dart:138 E/flutter (23494): https://github.com/builttoroam/device_calendar/pull/1 State.setState package:flutter/…/widgets/framework.dart:1109 E/flutter (23494): https://github.com/builttoroam/device_calendar/pull/2 _CalendarsPageState._retrieveCalendars package:device_calendar_example/…/pages/calendars.dart:137 E/flutter (23494): E/flutter (23494)

[thomassth]

Any particular action to trigger this error? Don't know how to reproduce on my side

[SungHyun22]

All I did was run the app. There is no other trigger.

[thomassth]

Still no idea how to reproduce this.

Any details about your phone? Did you see the "calendar permission" dialog? Was the permission enabled within App Info?

[SungHyun22]

yes I acceppt all calendar permission but this error was occured.

[thomassth]

I've finally figured it out Seems to be related to how Samsung make its local calendar (I happened to switch to a Samsung phone) I'll try to open a branch with the fix, but perhaps someone else need to open the PR so that I can approve it.

https://github.com/builttoroam/device_calendar/compare/develop...thomassth:device_calendar_null:ownerAccount-null?expand=1

[SungHyun22]

if I have a time i'll tryna fix it. thank you for figured out this problem.

[thomassth]

I've fixed the problem, see the branch I linked above Problem is I need someone other than me to open a pull request, otherwise I'm not allowed to approve it.

[SungHyun22]

Do you mean I have to fork the Repository and then create a pull request? Shoud I make changes based on your commit history?

[thomassth]

I have no idea

Maybe try forking my branch, then do the PR? That way you don't have to write anything new

[SungHyun22]

I open the PR https://github.com/builttoroam/device_calendar/pull/443