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 ('66ba26959e9018827d95f7d22a9fb31b',',649,753,774,808,849,869,904,907,974,975,1052,1102,1181,1257,1259,1262,1289,1372,1413,1465','1','lastpost','desc','1714579330','0','18.119.125.7')
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: 01.05.2024 @ 18:02
Script: /search.php?action=user&userid=22&sid=9518ca3e5be99cc10097ea77a07ddc11
Referer: