how to solve this problem?
`root@localhost:~# sudo service mysql status -l
● mariadb.service - MariaDB 10.1.43 database server
Loaded: loaded (/lib/systemd/system/mariadb.service; enabled)
Drop-In: /etc/systemd/system/mariadb.service.d
└─limits.conf, migrated-from-my.cnf-settings.conf
Active: active (running) since Mon 2020-07-13 14:55:04 UTC; 27min ago
Docs: man:mysqld(8)
https://mariadb.com/kb/en/library/systemd/
Main PID: 17868 (mysqld)
Status: "Taking your SQL requests now..."
CGroup: /system.slice/mariadb.service
└─17868 /usr/sbin/mysqld
Jul 13 14:55:04 localhost mysqld[17868]: 2020-07-13 14:55:04 139828509644736 [Note] InnoDB: Percona XtraDB (http://www.percona.com) 5.6.45-86.1 started; log sequence number 48718855894
Jul 13 14:55:04 localhost mysqld[17868]: 2020-07-13 14:55:04 139827219490560 [Note] InnoDB: Dumping buffer pool(s) not yet started
Jul 13 14:55:04 localhost mysqld[17868]: 2020-07-13 14:55:04 139828509644736 [Note] Plugin 'FEEDBACK' is disabled.
Jul 13 14:55:04 localhost mysqld[17868]: 2020-07-13 14:55:04 139828509644736 [Note] Server socket created on IP: '127.0.0.1'.
Jul 13 14:55:04 localhost mysqld[17868]: 2020-07-13 14:55:04 139828509644736 [Note] Reading of all Master_info entries succeeded
Jul 13 14:55:04 localhost mysqld[17868]: 2020-07-13 14:55:04 139828509644736 [Note] Added new Master_info '' to hash table
Jul 13 14:55:04 localhost mysqld[17868]: 2020-07-13 14:55:04 139828509644736 [Note] /usr/sbin/mysqld: ready for connections.
Jul 13 14:55:04 localhost mysqld[17868]: Version: '10.1.43-MariaDB-1jessie' socket: '/var/run/mysqld/mysqld.sock' port: 3306 mariadb.org binary distribution
Jul 13 14:55:04 localhost mysqld[17896]: Checking for corrupt, not cleanly closed and upgrade needing tables.
Jul 13 14:55:04 localhost systemd[1]: Started MariaDB 10.1.43 database server.`