SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: delete from bb1_counter_ip WHERE datum <= 1508785878
mysql error: Table './usr_web169_1/bb1_counter_ip' is marked as crashed and should be repaired
mysql error number: 145
mysql version: 5.0.51a-0.dotdeb.1
php version: 5.2.5-0.dotdeb.2
Date: 23.10.2017 @ 22:51
Script: /
Referer: