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 ('ead260bb5e6f1e5d7b2ed275e6b71518',',1502,1509','1','lastpost','desc','1714723661','0','3.149.26.176')
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 @ 10:07
Script: /search.php?action=user&userid=59&sid=651cd26e580a0959a673678496d3d9ac
Referer: