Discuz! info: MySQL Query Error

Time: 2018-4-22 9:00am
Script: /space.php

SQL: SELECT m.*, mf.*, s.lastactivity as online
FROM [Table]members m
LEFT JOIN [Table]memberfields mf ON mf.uid=m.uid
LEFT JOIN [Table]sessions s ON s.uid=m.uid AND s.invisible='0'
WHERE m.username='ɵ' LIMIT 1
Error: Table '.\arsbbs\[Table]sessions' is marked as crashed and should be repaired
Errno.: 145

Similar error report has beed dispatched to administrator before.