Fatal error!

ShooterGame.exe!FLANSession::StopLANSession() (0x0000000140987f6a) + 0 bytes [d:\ue4\unrealengine\engine\source\runtime\online\onlinesubsystem\private\lanbeacon.cpp:201]
ShooterGame.exe!FOnlineSessionSteam::CancelFindSessions() (0x0000000141a366c7) + 0 bytes [d:\ue4\unrealengine\engine\source\runtime\online\onlinesubsystemsteam\private\onlinesessioninterfacesteam.cpp:802]
ShooterGame.exe!AShooterGameSession::CancelFindSessions() (0x000000014009931e) + 0 bytes [d:\ue4\unrealengine\projects\shootergame\source\shootergame\private\shootergamesession.cpp:663]
ShooterGame.exe!UUI_ListSessions::CancelFindSessions() (0x0000000140167ec1) + 0 bytes [d:\ue4\unrealengine\projects\shootergame\source\shootergame\private\ui_listsessions.cpp:145]
ShooterGame.exe!UUI_ListSessions::FindSessions() (0x0000000140167a23) + 0 bytes [d:\ue4\unrealengine\projects\shootergame\source\shootergame\private\ui_listsessions.cpp:113]
ShooterGame.exe!UUI_MainMenu::ClickedButton() (0x00000001401742f4) + 0 bytes [d:\ue4\unrealengine\projects\shootergame\source\shootergame\private\ui_mainmenu.cpp:154]
ShooterGame.exe!UPrimalUI::execClickedButton() (0x000000014036f6cb) + 139 bytes [d:\ue4\unrealengine\projects\shootergame\source\shootergame\classes\primalui.h:15]
ShooterGame.exe!UFunction::Invoke() (0x0000000140482fdc) + 0 bytes [d:\ue4\unrealengine\engine\source\runtime\coreuobject\private\uobject\class.cpp:3691]
ShooterGame.exe!UObject::ProcessEvent() (0x00000001404cf388) + 0 bytes [d:\ue4\unrealengine\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:907]
ShooterGame.exe!TMulticastScriptDelegate<FWeakObjectPtr>::ProcessMulticastDelegate<UObject>() (0x000000013ff3aed0) + 0 bytes [d:\ue4\unrealengine\engine\source\runtime\core\public\uobject\scriptdelegates.h:390]
ShooterGame.exe!UButton::SlateHandleClicked() (0x00000001409c0f14) + 0 bytes [d:\ue4\unrealengine\engine\source\runtime\umg\private\components\button.cpp:157]
ShooterGame.exe!TBaseUObjectMethodDelegateInstance_RetVal_NoParams<UButton,FReply>::Execute() (0x00000001409eeda1) + 11 bytes [d:\ue4\unrealengine\engine\source\runtime\core\public\delegates\delegateinstancesimpl.inl:520]
ShooterGame.exe!SButton::OnMouseButtonUp() (0x000000014064f2f2) + 18 bytes [d:\ue4\unrealengine\engine\source\runtime\slate\private\widgets\input\sbutton.cpp:205]
ShooterGame.exe!FSlateApplication::ProcessMouseButtonUpEvent() (0x00000001405aade4) + 23 bytes [d:\ue4\unrealengine\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:3577]
ShooterGame.exe!FSlateApplication::OnMouseUp() (0x00000001405aa865) + 16 bytes [d:\ue4\unrealengine\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:3541]
ShooterGame.exe!FWindowsApplication::ProcessDeferredMessage() (0x000000014042940a) + 12 bytes [d:\ue4\unrealengine\engine\source\runtime\core\private\windows\windowsapplication.cpp:1346]
ShooterGame.exe!FWindowsApplication::DeferMessage() (0x0000000140429ae1) + 74 bytes [d:\ue4\unrealengine\engine\source\runtime\core\private\windows\windowsapplication.cpp:1637]
ShooterGame.exe!FWindowsApplication::ProcessMessage() (0x0000000140427083) + 0 bytes [d:\ue4\unrealengine\engine\source\runtime\core\private\windows\windowsapplication.cpp:1043]
ShooterGame.exe!FWindowsApplication::AppWndProc() (0x0000000140426527) + 0 bytes [d:\ue4\unrealengine\engine\source\runtime\core\private\windows\windowsapplication.cpp:599]
user32.DLL!UnknownFunction (0x0000000077289bd1) + 0 bytes [UnknownFile:0]
user32.DLL!UnknownFunction (0x00000000772898da) + 0 bytes [UnknownFile:0]
ShooterGame.exe!FWindowsPlatformMisc::PumpMessages() (0x00000001404369e6) + 41 bytes [d:\ue4\unrealengine\engine\source\runtime\core\private\windows\windowsplatformmisc.cpp:785]
ShooterGame.exe!FEngineLoop::Tick() (0x000000013fec44fc) + 0 bytes [d:\ue4\unrealengine\engine\source\runtime\launch\private\launchengineloop.cpp:2167]
ShooterGame.exe!GuardedMain() (0x000000013febf7bc) + 0 bytes [d:\ue4\unrealengine\engine\source\runtime\launch\private\launch.cpp:139]
ShooterGame.exe!GuardedMainWrapper() (0x000000013fec5a8a) + 5 bytes [d:\ue4\unrealengine\engine\source\runtime\launch\private\windows\launchwindows.cpp:125]
ShooterGame.exe!WinMain() (0x000000013fec5bb8) + 8 bytes [d:\ue4\unrealengine\engine\source\runtime\launch\private\windows\launchwindows.cpp:209]
ShooterGame.exe!__tmainCRTStartup() (0x0000000141d10af5) + 21 bytes [f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c:618]
kernel32.dll!UnknownFunction (0x0000000077385a4d) + 0 bytes [UnknownFile:0]
ntdll.dll!UnknownFunction (0x00000000774bb831) + 0 bytes [UnknownFile:0]
ntdll.dll!UnknownFunction (0x00000000774bb831) + 0 bytes [UnknownFile:0]
Fatal error!

ShooterGame.exe!FLANSession::StopLANSession() (0x0000000140987f6a) + 0 bytes [d:\ue4\unrealengine\engine\source\runtime\online\onlinesubsystem\private\lanbeacon.cpp:201]
ShooterGame.exe!FOnlineSessionSteam::CancelFindSessions() (0x0000000141a366c7) + 0 bytes [d:\ue4\unrealengine\engine\source\runtime\online\onlinesubsystemsteam\private\onlinesessioninterfacesteam.cpp:802]
ShooterGame.exe!AShooterGameSession::CancelFindSessions() (0x000000014009931e) + 0 bytes [d:\ue4\unrealengine\projects\shootergame\source\shootergame\private\shootergamesession.cpp:663]
ShooterGame.exe!UUI_ListSessions::CancelFindSessions() (0x0000000140167ec1) + 0 bytes [d:\ue4\unrealengine\projects\shootergame\source\shootergame\private\ui_listsessions.cpp:145]
ShooterGame.exe!UUI_ListSessions::FindSessions() (0x0000000140167a23) + 0 bytes [d:\ue4\unrealengine\projects\shootergame\source\shootergame\private\ui_listsessions.cpp:113]
ShooterGame.exe!UUI_MainMenu::ClickedButton() (0x00000001401742f4) + 0 bytes [d:\ue4\unrealengine\projects\shootergame\source\shootergame\private\ui_mainmenu.cpp:154]
ShooterGame.exe!UPrimalUI::execClickedButton() (0x000000014036f6cb) + 139 bytes [d:\ue4\unrealengine\projects\shootergame\source\shootergame\classes\primalui.h:15]
ShooterGame.exe!UFunction::Invoke() (0x0000000140482fdc) + 0 bytes [d:\ue4\unrealengine\engine\source\runtime\coreuobject\private\uobject\class.cpp:3691]
ShooterGame.exe!UObject::ProcessEvent() (0x00000001404cf388) + 0 bytes [d:\ue4\unrealengine\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:907]
ShooterGame.exe!TMulticastScriptDelegate<FWeakObjectPtr>::ProcessMulticastDelegate<UObject>() (0x000000013ff3aed0) + 0 bytes [d:\ue4\unrealengine\engine\source\runtime\core\public\uobject\scriptdelegates.h:390]
ShooterGame.exe!UButton::SlateHandleClicked() (0x00000001409c0f14) + 0 bytes [d:\ue4\unrealengine\engine\source\runtime\umg\private\components\button.cpp:157]
ShooterGame.exe!TBaseUObjectMethodDelegateInstance_RetVal_NoParams<UButton,FReply>::Execute() (0x00000001409eeda1) + 11 bytes [d:\ue4\unrealengine\engine\source\runtime\core\public\delegates\delegateinstancesimpl.inl:520]
ShooterGame.exe!SButton::OnMouseButtonUp() (0x000000014064f2f2) + 18 bytes [d:\ue4\unrealengine\engine\source\runtime\slate\private\widgets\input\sbutton.cpp:205]
ShooterGame.exe!FSlateApplication::ProcessMouseButtonUpEvent() (0x00000001405aade4) + 23 bytes [d:\ue4\unrealengine\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:3577]
ShooterGame.exe!FSlateApplication::OnMouseUp() (0x00000001405aa865) + 16 bytes [d:\ue4\unrealengine\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:3541]
ShooterGame.exe!FWindowsApplication::ProcessDeferredMessage() (0x000000014042940a) + 12 bytes [d:\ue4\unrealengine\engine\source\runtime\core\private\windows\windowsapplication.cpp:1346]
ShooterGame.exe!FWindowsApplication::DeferMessage() (0x0000000140429ae1) + 74 bytes [d:\ue4\unrealengine\engine\source\runtime\core\private\windows\windowsapplication.cpp:1637]
ShooterGame.exe!FWindowsApplication::ProcessMessage() (0x0000000140427083) + 0 bytes [d:\ue4\unrealengine\engine\source\runtime\core\private\windows\windowsapplication.cpp:1043]
ShooterGame.exe!FWindowsApplication::AppWndProc() (0x0000000140426527) + 0 bytes [d:\ue4\unrealengine\engine\source\runtime\core\private\windows\windowsapplication.cpp:599]
user32.DLL!UnknownFunction (0x0000000077289bd1) + 0 bytes [UnknownFile:0]
user32.DLL!UnknownFunction (0x00000000772898da) + 0 bytes [UnknownFile:0]
ShooterGame.exe!FWindowsPlatformMisc::PumpMessages() (0x00000001404369e6) + 41 bytes [d:\ue4\unrealengine\engine\source\runtime\core\private\windows\windowsplatformmisc.cpp:785]
ShooterGame.exe!FEngineLoop::Tick() (0x000000013fec44fc) + 0 bytes [d:\ue4\unrealengine\engine\source\runtime\launch\private\launchengineloop.cpp:2167]
ShooterGame.exe!GuardedMain() (0x000000013febf7bc) + 0 bytes [d:\ue4\unrealengine\engine\source\runtime\launch\private\launch.cpp:139]
ShooterGame.exe!GuardedMainWrapper() (0x000000013fec5a8a) + 5 bytes [d:\ue4\unrealengine\engine\source\runtime\launch\private\windows\launchwindows.cpp:125]
ShooterGame.exe!WinMain() (0x000000013fec5bb8) + 8 bytes [d:\ue4\unrealengine\engine\source\runtime\launch\private\windows\launchwindows.cpp:209]
ShooterGame.exe!__tmainCRTStartup() (0x0000000141d10af5) + 21 bytes [f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c:618]
kernel32.dll!UnknownFunction (0x0000000077385a4d) + 0 bytes [UnknownFile:0]
ntdll.dll!UnknownFunction (0x00000000774bb831) + 0 bytes [UnknownFile:0]
ntdll.dll!UnknownFunction (0x00000000774bb831) + 0 bytes [UnknownFile:0]