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 ('a15a07ec985fd4fb44ad1512b17b7e4f',',934,1051,1108,1155,1170,1245,1252,1263,1495,1374,1439,1524','1','lastpost','desc','1714965648','0','52.14.85.76')
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 @ 05:20
Script: /search.php?action=user&userid=49&sid=88e7629b2f395013c3a1ee687b6a794e
Referer: