Running packaged project

LowLevelFatalError [File:Unknown] [Line: 836]
Rendering thread exception:
LowLevelFatalError [File:Unknown] [Line: 249]

and

Fatal error: [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/RenderCore/Private/RenderingThread.cpp] [Line: 836]
Rendering thread exception:
Fatal error: [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/Windows/D3D11RHI/Private/D3D11Util.cpp] [Line: 249]

Result failed
at D:/Build/++UE4/Sync/Engine/Source/Runtime/Windows/D3D11RHI/Private/D3D11Viewport.cpp:368
with error DXGI_ERROR_INVALID_CALL

0x00007ff89913d759 KERNELBASE.dll!UnknownFunction []

Hey does anyone know where I can even start to solve this error that showed up when I ran my packaged project both in development and shipping modes? Please, please, please help I am crying with frustration haha