MySQL no longer woring after the last update

I insyalled the last big update yesterday. I rebooted the server and found last night that my phpBB had gone down.
When I checked the MySQL server had failed to start.

mysqld.service - MySQL Server
Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)
Active: failed (Result: exit-code) since Sat 2024-02-24 10:02:33 CET; 48s ago
Docs: man:mysqld(8)
Process: 9158 ExecStart=/usr/sbin/mysqld $MYSQLD_OPTS (code=exited, status=1/FAILURE)
Process: 9080 ExecStartPre=/usr/bin/mysqld_pre_systemd (code=exited, status=0/SUCCESS)
Main PID: 9158 (code=exited, status=1/FAILURE)
Status: “Server shutdown complete”
Error: 13 (Permission denied)

Help required. Everything is down that uses mysql

Is this RL8 or 9?
What packages were updated?
Did you reboot after update?