Could you upload that particular file for us to use?
Uuff I don't know if I should, for me no problem but that is Reshade content.
Anyway to create dxgi.dll is easy, for example copy LastHope.exe to one empty folder, download Reshade and install it pathing the path game to your fake LastHope.exe with basic features and dx10 option, it will create the dxgi.dll inside the fake path, later copy the dxgi.dll and paste inside LastHope\Engine\Binaries\Win64
Launching the game will get same error but the game works already.
*Note: In v14.0 this issue is fixed, at least in my case. The game has included dxgi.dll