Game exports with apparently no errors but opening said exported .exe crashes it with no error message

So I exported my game in 4.8.3, previously had trouble with exportation but fixed them and now the game exports itself correctly.

I exported for win 64bit which is what my own system is running and when trying to opening the whatever.exe (the game’s executable file) it crashes and sadly only displays : “You do not have any debugging symbols required to display the callstack for this crash.”

If I try to build the game inside the engine with the option Play->Standalone Game, the engine crashes with this error message:

MachineId:6D8846214F540FBF87D42CB7CF73C444
EpicAccountId:2395cb2570674f408a8e43c4cc95aa65

Unknown exception - code 00000001 (first/second chance not available)

"Assertion failed: Class [File:d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source

UE4Editor_Core!FDebug::AssertFailed() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\core\private\misc\outputdevice.cpp:355]
UE4Editor_Engine!NewObject() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\coreuobject\public\uobject\uobjectglobals.h:1100]
UE4Editor_Engine!UGameEngine::Init() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\gameengine.cpp:438]
UE4Editor!FEngineLoop::Init() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\launchengineloop.cpp:2026]
UE4Editor!GuardedMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\launch.cpp:136]
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]

Thanks for any help provided in advance!