WILL SOMEONE HELP?

Sooo! I was playing on MLBS (I downloaded it and i played one time) I found a bug where the box floats in the mine and the box won't come back. I exited the game because i tought that was the solution but when i tried to open MLBS the game crashed with the text: 

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The UE4-ShopSim Game has crashed and will close
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LowLevelFatalError [File:D:\Build\++UE4+Release-4.17+Compile\Sync\Engine\Source\Runtime\Windows\D3D11RHI\Private\D3D11Util.cpp] [Line: 233] 
D3DRHI->GetFactory()->CreateSwapChain(DXGIDevice,&SwapChainDesc,SwapChain.GetInitReference()) failed 
 at D:\Build\++UE4+Release-4.17+Compile\Sync\Engine\Source\Runtime\Windows\D3D11RHI\Private\Windows\WindowsD3D11Viewport.cpp:85 
 with error E_INVALIDARG

(I don't even have a File D: i only have a C:)

Then i tried opening the game several times but it wouldn't work and the result was the same. Pls help me i wanna play it but for now i'll just wait and play other games ;_; so sad and i started loving it :_;