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 ('27ca42cd446eaac2c4e5f556c3aef2a5',',1409,1411,1450,1496,1499','1','lastpost','desc','1715197387','0','3.19.29.89')
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 @ 21:43
Script: /search.php?action=user&userid=63&sid=3904398b6db2e1b6658f7130bdd42ac0
Referer: