Hey, I’ve had a similar issue before, and it usually boils down to either a PHP or OpenLiteSpeed config problem, especially if the sites are working fine. You might want to check the OpenLiteSpeed error logs to see if there's anything pointing to the admin panel specifically. I’d also recommend double-checking that the admin panel is running the correct PHP version and that your server’s resource limits, like memory, aren’t being exceeded. If you’ve already reinstalled PHP and OpenLiteSpeed, it’s probably something simple like that.