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 ('90386c70316b23e73b27d52b4cdcc570',',1475,1435','1','lastpost','desc','1714343035','0','18.216.94.152')
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: 29.04.2024 @ 00:23
Script: /search.php?action=user&userid=66&sid=ef6001d6559d27fa5f2149565c2c96ed
Referer: