Prohibitory symbol on Big Sur upgrade boot

Hello, I am trying to boot Big Sur upgrade from my Catalina Hackintosh that has been running fine since I made it. No idea why its doing this any tips to sort this out?

Specs:
CPU: i5-6200U
GPU: Intel HD Graphics 520
Laptop: ASUS Transformer 3 Pro

submitted by /u/Sansyy
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