SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6 pl2): Invalid SQL: delete from bb1_counter_ip WHERE datum <= 1526845240
mysql error: Incorrect file format 'bb1_counter_ip'
mysql error number: 130
mysql version: 5.5.60-0+deb8u1
php version: 5.6.36-1+0~20180505045733.13+jessie~1.gbp9b5cab
Date: 20.05.2018 @ 21:42
Script: /wbb2/vgadbook.php?action=showid&id=4095&sid=ce9bac0364098d9a9563eb3ccc2cee53
Referer: