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 ('9ea685df636f0ead0e8939726b2f4cb5',',1502,1509','1','lastpost','desc','1714943230','0','3.149.229.253')
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 @ 23:07
Script: /search.php?action=user&userid=59&sid=8e9a5b3e3b3aa6ec82d9e8f00ac38125
Referer: