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 ('1f5d583b7424e21b2fa39d10c2098c5c',',1502,1509','1','lastpost','desc','1715176869','0','18.225.35.81')
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: 08.05.2024 @ 16:01
Script: /search.php?action=user&userid=59&sid=4c2137d7461b59aaf129df8ce7eebccc
Referer: