After Root Revert & Patch - Can’t Boot MacBook

On a MacBook Pro 2015 (running the last OS compatible with OCLP) and it wasn’t letting me root patch. So I went to Revert Root Patches, then after reboot, I tried to root patch once more. Now, the computer will boot into the log in screen, but after I sign in, I get this screen:

How can I fix this?