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 ('1815d8222f0141a671c424a4b4e58e66',',934,1051,1108,1155,1170,1245,1252,1263,1495,1374,1439,1524','1','lastpost','desc','1714911910','0','3.147.205.154')
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: 05.05.2024 @ 14:25
Script: /search.php?action=user&userid=49&sid=ba93e41049fd8e44ae09cae4e8eaa2f9
Referer: