cPanel 500 Error ID 1db081a92f36e

I can't access cPanel on my server, and all the websites on the server are down. I've tried running /scripts/upcp --force, but it didn't help. The login page of my WHM and cPanel have reverted to an old-school legacy template (see attached image), and /usr/local/cpanel/logs/error_log shows the error: Failed to show template "login" in login theme "cpanel" (); falling back to legacy login. at /usr/local/cpanel/Cpanel/Server.pm line 2235, line 2. When I try to log into cpanel, I get a 500 error, with Error ID 1db081a92f36e. At this point, the cpanel error log shows: 2023-03-16 12:37:27 +1100] warn [whostmgrd] open(/home/degreesprojects/.lastlogin) failed: Permission denied [2023-03-16 12:37:28 +1100] warn [cpaneld] open(/home/degreesprojects/.lastlogin) failed: Permission denied cpsrvd 1db081a92f36e: Can't locate Cpanel/Exception/CORE.pm: /usr/local/cpanel/Cpanel/Exception/CORE.pm: Permission denied at /usr/local/cpanel/Cpanel/Exception.pm line 64.[2023-03-16 01:37:28 +0000] info [cpaneld] Internal Server Error: "GET /cpsess7852004844/frontend/jupiter/index.html?login=1&post_login=1683978665679 HTTP/1.1" 500 Error ID 1db081a92f36e How can I fix this please?