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 ('7e7b154a5097faf4f4fffd8dfa5ce42d',',1502,1509','1','lastpost','desc','1714896652','0','13.58.121.214')
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: 05.05.2024 @ 10:10
Script: /search.php?action=user&userid=59&sid=7781a14235d01c70d617b31f3db35665
Referer: