SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('88a6540a39c0f88aff026e7382077973','0','216.73.216.167','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1759921837','thread.php?postid=77644','0','0','')
mysql error: Duplicate entry '88a6540a39c0f88aff026e7382077973' for key 'PRIMARY'
mysql error number: 1062
mysql version: 10.6.15-MariaDB-log
php version: 7.4.33
Date: 08.10.2025 @ 13:10
Script: /thread.php?postid=77644
Referer: