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 ('0ae97326c500d7d5cd271556a2902508',',1502,1509','1','lastpost','desc','1714914679','0','3.17.181.21')
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 @ 15:11
Script: /search.php?action=user&userid=59&sid=ac16954f99c22f3de0938712204d6efd
Referer: