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 ('e5c8fb0caf13a064f2ea0215d07da6d5',',1502,1509','1','lastpost','desc','1715054075','0','3.17.203.68')
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: 07.05.2024 @ 05:54
Script: /search.php?action=user&userid=59&sid=6ea99916e67652f629327b3922895b15
Referer: