After the du today mysql cannot start.
invoke-rc.d mysql start
Job for mysql.service failed because the control process exited with error code.
See "systemctl status mysql.service" and "journalctl -xe" for details.
invoke-rc.d: initscript mysql, action "start" failed.
● mysql.service - MySQL Community Server
Loaded: loaded (/lib/systemd/system/mysql.service; enabled; vendor preset: enabled)
Active: activating (auto-restart) (Result: exit-code) since Mon 2021-09-06 14:16:10 CEST; 14ms ago
Process: 48273 ExecStartPre=/usr/share/mysql/mysql-systemd-start pre (code=exited, status=217/USER)
systemctl status mysql.service
● mysql.service - MySQL Community Server
Loaded: loaded (/lib/systemd/system/mysql.service; enabled; vendor preset: enabled)
Active: failed (Result: exit-code) since Mon 2021-09-06 14:16:11 CEST; 53s ago
Process: 48279 ExecStartPre=/usr/share/mysql/mysql-systemd-start pre (code=exited, status=217/USER)
CPU: 2ms
Sep 06 14:16:11 master systemd[1]: mysql.service: Scheduled restart job, restart counter is at 5.
Sep 06 14:16:11 master systemd[1]: Stopped MySQL Community Server.
Sep 06 14:16:11 master systemd[1]: mysql.service: Start request repeated too quickly.
Sep 06 14:16:11 master systemd[1]: mysql.service: Failed with result 'exit-code'.
Sep 06 14:16:11 master systemd[1]: Failed to start MySQL Community Server.
What can I do?