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 ('961d48ce03ef99fa0ceb368915382798',',649,753,774,808,849,869,904,907,974,975,1052,1102,1181,1257,1259,1262,1289,1372,1413,1465','1','lastpost','desc','1714771539','0','18.222.67.251')
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: 03.05.2024 @ 23:25
Script: /search.php?action=user&userid=22&sid=f71de3e1dba3d1b48ae93d542e7c50f0
Referer: