# \[Bug Report\] Custom onlinesubsystem login

**URL:** <https://forums.unrealengine.com/t/bug-report-custom-onlinesubsystem-login/377457>\
**Category:** Programming & Scripting\
**Tags:** unreal-engine\
**Created:** [November 26, 2016, 6:06am UTC](https://forums.unrealengine.com/t/bug-report-custom-onlinesubsystem-login/377457 "2016-11-26T06:06:03Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![minnow](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@minnow](https://forums.unrealengine.com/u/minnow)\
**Post date:** [November 26, 2016, 6:06am UTC](https://forums.unrealengine.com/t/bug-report-custom-onlinesubsystem-login/377457/1 "2016-11-26T06:06:03Z")

</div>

Hello. I was developing custom onlinesubsystem googleplay login fucntion in C++.  
but after update 4.14.0, this function always crash…

here is log.

```
D/UE4 (24761): LogTemp:Warning: AKAccountManagerBP_C_0 : ShowExternalLoginUI
D/UE4 (24761): [2016.11.26-05.51.20:901][0]LogTemp:Warning: AKAccountManagerBP_C_0 : ShowExternalLoginUI
D/UE4 (24761): LogTemp:Warning: AKAccountManagerBP_C_0 : Bind and ShowLoginUI Call
D/UE4 (24761): [2016.11.26-05.51.20:901][0]LogTemp:Warning: AKAccountManagerBP_C_0 : Bind and ShowLoginUI Call
D/UE4 (24761): Google Client Connect using email xxxxxxx@gmail.com
D/UE4 (24761): Google Client Connect using Access Token xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
D/UE4 (24761): Google Client connected successfully, Access Token: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
D/UE4 (24761): Assertion failed: CurrentLoginTask == nullptr [File:D:\Private\SVN\NextStageUE4140_B\Engine\Plugins\Online\Android\OnlineSubsystemGooglePlay\Source\Private\OnlineSubsystemGooglePlay.cpp] [Line: 266]
D/UE4 (24761): libUE4.so!FDebug::LogAssertFailedMessage(char const*, char const*, int, wchar_t const*, ...)
D/UE4 (24761): libUE4.so!FOnlineSubsystemGooglePlay::ProcessGoogleClientConnectResult(bool, FString)
D/UE4 (24761): libUE4.so![Unknown]()
D/UE4 (24761): libUE4.so![Unknown]()
D/UE4 (24761): libUE4.so!TGraphTask<FSimpleDelegateGraphTask>::ExecuteTask(TArray<FBaseGraphTask*, FDefaultAllocator>&, ENamedThreads::Type)
D/UE4 (24761): libUE4.so!FNamedTaskThread::ProcessTasksNamedThread(int, bool)
D/UE4 (24761): libUE4.so!FNamedTaskThread::ProcessTasksUntilIdle(int)
D/UE4 (24761): libUE4.so![Unknown]()
D/UE4 (24761): libUE4.so!FEngineLoop::Tick()
D/UE4 (24761): libUE4.so!AndroidMain(android_app*)
D/UE4 (24761): libUE4.so!android_main()
D/UE4 (24761): libUE4.so![Unknown]()
D/UE4 (24761): libc.so!__thread_entry()
D/UE4 (24761): libc.so!pthread_create()
D/UE4 (24761): [2016.11.26-05.51.21:331][0]Assertion failed: Assertion failed: CurrentLoginTask == nullptr [File:D:\Private\SVN\NextStageUE4140_B\Engine\Plugins\Online\Android\OnlineSubsystemGooglePlay\Source\Private\OnlineSubsystemGooglePlay.cpp] [Line: 266]
D/UE4 (24761): [2016.11.26-05.51.21:341][0]LogWindows: FAndroidMisc::RequestExit(1)
D/UE4 (23138): Battery: status = 3, rawlevel = 85, scale = 100
D/UE4 (23138): nativeBatteryEvent(stat = 3, lvl = 85, t = 33.90)

```

and here is my code.

```
void AAKAccountManager::ShowExternalLoginUI()
{
	UAKLibrary::PrintErrorMessage(this, TEXT("ShowExternalLoginUI"));
	if (IOnlineSubsystem* OnlineSubsystem = IOnlineSubsystem::Get("GooglePlay"))
	{
		UAKLibrary::PrintErrorMessage(this, TEXT("Bind and ShowLoginUI Call"));
		OnCompleteLoginUIClosedDelegate.BindUObject(this, &AAKAccountManager::OnCompleteLoginUIClosed);
		OnlineSubsystem->GetExternalUIInterface()->ShowLoginUI(0, false, OnCompleteLoginUIClosedDelegate);
	}
}

```

and I know some rule.  
when I set DefaultPlatformService = GooglePlay in DefaultEngine.ini, It’s fine.

but When I set DefaultPlatformService = CustomPlatform in DefaultEngine.ini, It always print my log.

help me…

---

<div class="post-metadata">

**Author:** ![Sean\_Flint](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Sean\_Flint](https://forums.unrealengine.com/u/Sean_Flint)\
**Post date:** [November 30, 2016, 2:46pm UTC](https://forums.unrealengine.com/t/bug-report-custom-onlinesubsystem-login/377457/2 "2016-11-30T14:46:58Z")

</div>

Hey minnow,

Next time the crash occurs, please provide the following information:

- Logs from your project’s Saved-\>Logs folder
- Machine ID from the Crash Reporter window if you’re getting one, and ensure to hit Send & Close. If you are not getting a crash reporter window, please provide the callstack from Visual Studio.
- A list of repro steps, or a simplified test project that showcases the issue.

Thank you

---

<div class="post-metadata">

**Author:** ![minnow](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@minnow](https://forums.unrealengine.com/u/minnow)\
**Post date:** [December 1, 2016, 1:18pm UTC](https://forums.unrealengine.com/t/bug-report-custom-onlinesubsystem-login/377457/3 "2016-12-01T13:18:58Z")

</div>

Thanks to reply my post, Sean Flint.  
Unfortunatly I can’t see callstack, because I run the game in Android device.  
Is it possible to see callstack in Android device?..

---

<div class="post-metadata">

**Author:** ![Sean\_Flint](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Sean\_Flint](https://forums.unrealengine.com/u/Sean_Flint)\
**Post date:** [December 5, 2016, 2:41pm UTC](https://forums.unrealengine.com/t/bug-report-custom-onlinesubsystem-login/377457/4 "2016-12-05T14:41:50Z")

</div>

You can try grabbing the logs off of your device. Here’s a wiki page that goes through how to do this:

> **[A new, community-hosted Unreal Engine Wiki](https://forums.unrealengine.com/t/a-new-community-hosted-unreal-engine-wiki/141494)**
>
> After over a year in maintenance mode, the official Unreal Engine Wiki is now permanently offline. These resources now live on a new community-run Unreal Engine Community Wiki — ue4community.wiki! You will be able to find content from the official...

---

<div class="post-metadata">

**Author:** ![minnow](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@minnow](https://forums.unrealengine.com/u/minnow)\
**Post date:** [December 9, 2016, 9:11am UTC](https://forums.unrealengine.com/t/bug-report-custom-onlinesubsystem-login/377457/5 "2016-12-09T09:11:18Z")

</div>

Hello, Sean Flint.  
First, thanks to give information for me.

but I don’t need to use custom onlinesubsystem at now.  
this function transform to custom plugin…

Thanks to give me help.