HP 820 G2 FATAL ERROR

https://preview.redd.it/5pphbzjnbi6d1.jpg?width=1600&format=pjpg&auto=webp&s=9f0f2897dd73fb6ceb00f4525b720a9a981c01e5

Hello, does anybody know how to fix this please?
i have hp 820 g2 with i5-4300u and 8gb ram and i booted into macos big sur with opencore 1.0.0
thanks!