Ryzen problem

IOPlatformPanicAction

Hi everyone

I have new ryzen pc with this components:
Ryzen 7 5800x
Saphire rx570 8gb
Asus b550m-a

I need your help! I followed a detailed OpenCore guide for ryzen and b550 mobos and Big Sur but i get next error:

I0PlatformPanicAction -› AppleAHCIDiskDriver
IOPlatformPanicAction -› AppleSMC

panic(cpu 0 caller Oxffffff80192bfa66): initproc exited -- exit reason namespace 2 subcode ®x4 description: none

Thread O crashed
RAX: 0x0000000000000010, RBX...

Tonymacx86