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 ('a2a04823a626ed125baeb21a1709e500',',649,753,774,808,849,869,904,907,974,975,1052,1102,1181,1257,1259,1262,1289,1372,1413,1465','1','lastpost','desc','1715030292','0','3.145.64.132')
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: 06.05.2024 @ 23:18
Script: /search.php?action=user&userid=22&sid=1fe0d736dbb36a33767d27fbd173468b
Referer: