Patched Sur installation problems

Hi, I’m using an iMac 21.5 inch late 2012 with OS Catalina on it right now.

First I tried to use Patched Sur from Bensova’s github repository. That kept failing during the installation, even when I tried to use the older versions. I decided to give Legacy OpenCore a try, and I ended up with this error code: Output: Started erase on disk2 Unmounting disk Creating the partition map Waiting for partitions to activate Formatting disk2s2 as Mac OS Extended with name OCLP-Installer Initialized /dev/rdisk2s2 as a 29 GB case-insensitive HFS Plus volume Mounting disk Finished erase on disk2 Copying to disk: 0%... 10%... 20%... 30%... 40%... 50%... 60%... 70%... 80%... 90%... 100% Making disk bootable... Couldn't find InstallInfo.plist

Error: 2023-10-04 22:48:36.462 OpenCore-Patcher[88067:2385132] Starting... Erasing disk: 0%... 10%... 20%... 30%... 100% Couldn't mount dmg /Volumes/Install macOS Big Sur/Install macOS Big Sur.app/Contents/SharedSupport/SharedSupport.dmg (error code 112)The bless of the installer disk failed. 2023-10-05 00:07:16.163 OpenCore-Patcher[88067:2385132] Done

Can anyone please help thank you!