KP prior initialization [Big Sur beta installer] (opencore 0.6.4)

[Franklin_NGO]

Hello, my hackintosh is working well with Catalina using Opencore 0.6.4.

My hardware:

Bootloader: opencore 0.6.4 (config attached, SMBIOS removed)
Hardware: Laptop thinkpad L380 (detail info: https://psref.lenovo.com/syspool/Sys/PDF/ThinkPad/ThinkPad_L380/ThinkPad_L380_Spec.PDF)
CPU: I5-8250U
GPU: UHD 620
SSD: 970 Evo plus
Wifi card: native broadcom card 
OS: MacOS Catalina 10.15.7

I'm trying to install Big Sur on another partition, but encountered KP prior initialization. I tried different Big Sur versions, but to no avail. If anyone know how to fix, please help me. Thank you.

KP prior initialization:

 

 

config.plist