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 ('386190e89eeb79e897fb44829164cc2b',',1502,1509','1','lastpost','desc','1713910002','0','3.21.248.47')
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: 24.04.2024 @ 00:06
Script: /search.php?action=user&userid=59&sid=f447fb36bd48602a456c920bf7e55841
Referer: