Assertion failed: Canvas [File:D:\Build\++UE4\Sync\Engine\Source\Runtime\Engine\Private\HUD.cpp] [Line: 92]

UE4Editor_Core!FDebug::AssertFailed() [d:\build\++ue4\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:425]
UE4Editor_Engine!AHUD::Draw2DLine() [d:\build\++ue4\sync\engine\source\runtime\engine\private\hud.cpp:92]
UE4Editor_Itsnotfair_8996!AMyHUD::DrawLine() [d:\user\documents\unrealprojects\itsnotfair\source\itsnotfair\myhud.cpp:17]
UE4Editor_Itsnotfair_8996!ARTSPlayerController::EndPos() [d:\user\documents\unrealprojects\itsnotfair\source\itsnotfair\rtsplayercontroller.cpp:59]
UE4Editor_Engine!FInputActionUnifiedDelegate::Execute() [d:\build\++ue4\sync\engine\source\runtime\engine\classes\components\inputcomponent.h:232]
UE4Editor_Engine!UPlayerInput::ProcessInputStack() [d:\build\++ue4\sync\engine\source\runtime\engine\private\userinterface\playerinput.cpp:1266]
UE4Editor_Engine!APlayerController::ProcessPlayerInput() [d:\build\++ue4\sync\engine\source\runtime\engine\private\playercontroller.cpp:2476]
UE4Editor_Engine!APlayerController::TickPlayerInput() [d:\build\++ue4\sync\engine\source\runtime\engine\private\playercontroller.cpp:4393]
UE4Editor_Engine!APlayerController::PlayerTick() [d:\build\++ue4\sync\engine\source\runtime\engine\private\playercontroller.cpp:2137]
UE4Editor_Engine!APlayerController::TickActor() [d:\build\++ue4\sync\engine\source\runtime\engine\private\playercontroller.cpp:4488]
UE4Editor_Engine!FActorTickFunction::ExecuteTick() [d:\build\++ue4\sync\engine\source\runtime\engine\private\actor.cpp:137]
UE4Editor_Engine!TGraphTask<FTickFunctionTask>::ExecuteTask() [d:\build\++ue4\sync\engine\source\runtime\core\public\async\taskgraphinterfaces.h:829]
UE4Editor_Core!FNamedTaskThread::ProcessTasksNamedThread() [d:\build\++ue4\sync\engine\source\runtime\core\private\async\taskgraph.cpp:665]
UE4Editor_Core!FNamedTaskThread::ProcessTasksUntilQuit() [d:\build\++ue4\sync\engine\source\runtime\core\private\async\taskgraph.cpp:574]
UE4Editor_Core!FTaskGraphImplementation::WaitUntilTasksComplete() [d:\build\++ue4\sync\engine\source\runtime\core\private\async\taskgraph.cpp:1358]
UE4Editor_Engine!FTickTaskSequencer::ReleaseTickGroup() [d:\build\++ue4\sync\engine\source\runtime\engine\private\ticktaskmanager.cpp:541]
UE4Editor_Engine!FTickTaskManager::RunTickGroup() [d:\build\++ue4\sync\engine\source\runtime\engine\private\ticktaskmanager.cpp:1455]
UE4Editor_Engine!UWorld::RunTickGroup() [d:\build\++ue4\sync\engine\source\runtime\engine\private\leveltick.cpp:780]
UE4Editor_Engine!UWorld::Tick() [d:\build\++ue4\sync\engine\source\runtime\engine\private\leveltick.cpp:1454]
UE4Editor_UnrealEd!UEditorEngine::Tick() [d:\build\++ue4\sync\engine\source\editor\unrealed\private\editorengine.cpp:1691]
UE4Editor_UnrealEd!UUnrealEdEngine::Tick() [d:\build\++ue4\sync\engine\source\editor\unrealed\private\unrealedengine.cpp:403]
UE4Editor!FEngineLoop::Tick() [d:\build\++ue4\sync\engine\source\runtime\launch\private\launchengineloop.cpp:3495]
UE4Editor!GuardedMain() [d:\build\++ue4\sync\engine\source\runtime\launch\private\launch.cpp:166]
UE4Editor!GuardedMainWrapper() [d:\build\++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:144]
UE4Editor!WinMain() [d:\build\++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:223]
UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:283]
kernel32
ntdll