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 ('d1548b7bc1b2c6481e38c26561de3c6c',',1502,1509','1','lastpost','desc','1715130303','0','3.129.19.251')
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 @ 03:05
Script: /search.php?action=user&userid=59&sid=700a7172866c24041938bce3fbce5238
Referer: