SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: INSERT INTO bb1_searchs (searchhash,postids,showposts,sortby,sortorder,searchtime,userid,ipaddress) VALUES ('830641a361d85b0d20b31739558a896f',',1502,1509','1','lastpost','desc','1715104435','0','3.15.6.77')
mysql error: Field 'searchstring' doesn't have a default value
mysql error number: 1364
mysql version: 10.3.39-MariaDB-1:10.3.39+maria~ubu2004
php version: 5.2.17
Date: 07.05.2024 @ 19:53
Script: /search.php?action=user&userid=59&sid=47fb2011021b4900ac2696daa325101c
Referer: