Problem for boot Osx Big Sur Opencore - "OCB: LoadImage failed - Unsupported"

Hello !

I'm desperately trying to install Osx on my pc

I checked my config file on opencore.slowgeek and everything is ok

( https://opencore.slowgeek.com/?file=haswell066Pq4eIA&rs=haswell066 )

but when I try to boot on mac os installation I get a message

"OCB: LoadImage failed - Unsupported"

I try to install Big Sur and my config is an desktop pc, intel haswell

intel i5 4590K -- iMac 15.1

OC 0.7.3

EDIT : config.plist

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https://preview.redd.it/cf23rlg2kbn71.png?width=810&format=png&auto=webp&s=4d77255378f2512376588e5cdc7889b2e3dbfc12

https://preview.redd.it/4v3evqg2kbn71.png?width=787&format=png&auto=webp&s=ec81fea904bbbaefa5cc78c865dda2f3f90f558d