pci configuration begin - ERROR - opencore

I am following this open core guide

- https://www.youtube.com/watch?v=eUnVzJsINCI

- https://github.com/acidanthera/OpenCorePkg

With macOS 10.14.6, I have an AMD Ryzen 2700x and a GTX 650.

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I get the same error as this guy - https://www.youtube.com/watch?v=awoSejBgx2c

pci configuration begin 

But I can not execute these solutions command anywhere because I did not had the options to pick anything I just picked the partition from the boot menu devices and than this error.

So this is not an option for me "For those who don't know where to put boot flag When we first boot up into clover bootloader select your mac installation and click setting (gear icon) then hit enter on Boot args and start writing at the end of line"