When trying to load a game level from a UMG menu, the game usually crashes with the below message. It has loaded the game level successfully once out of many times, and will crash on playing the menu again after the crash without restarting the editor.
The blueprint nodes leading to the crash are as follows: OnClicked → Remove All Widgets → Open Level → Remove from Parent.
Access violation - code c0000005 (first/second chance not available)
"Assertion failed: IsValid() [File:D:\BuildFarm\buildmachine_++depot+
UE4Editor_CoreUObject!UObjectBaseUtility::GetFullName() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\coreuobject\private\uobject\uobjectbaseutility.cpp:77]
UE4Editor_CoreUObject!FArchiveRealtimeGC::PerformReachabilityAnalysis() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\coreuobject\private\uobject\garbagecollection.cpp:572]
UE4Editor_CoreUObject!CollectGarbageInternal() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\coreuobject\private\uobject\garbagecollection.cpp:1284]
UE4Editor_CoreUObject!CollectGarbage() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\coreuobject\private\uobject\garbagecollection.cpp:1336]
UE4Editor_Engine!UEngine::HandleMemCommand() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\unrealengine.cpp:4147]
UE4Editor_Engine!UEngine::Exec() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\unrealengine.cpp:2512]
UE4Editor_Engine!UGameEngine::Exec() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\gameengine.cpp:677]
UE4Editor_Engine!UEngine::LoadMap() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\unrealengine.cpp:8987]
UE4Editor_Engine!UEngine::Browse() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\unrealengine.cpp:8360]
UE4Editor_Engine!UEngine::TickWorldTravel() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\unrealengine.cpp:8535]
UE4Editor_Engine!UGameEngine::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\gameengine.cpp:875]
UE4Editor!FEngineLoop::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\launchengineloop.cpp:2359]
UE4Editor!GuardedMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\launch.cpp:142]
UE4Editor!GuardedMainWrapper() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\windows\launchwindows.cpp:200]