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 ('d1a7f207f18d8e73b7561d6b85a7070f',',1502,1509','1','lastpost','desc','1714977417','0','18.218.168.16')
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: 06.05.2024 @ 08:36
Script: /search.php?action=user&userid=59&sid=a251cfef1f82b72b09f9356ebae71616
Referer: