SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: INSERT INTO bb2_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('cbeb72cc9799dbe380701ecbfb56408f','0','18.119.123.217','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716325684','profile.php?userid=626&sid=b49d6f4ba124e0da2e4e1882cd0e7b66','0','0','')
mysql error: Duplicate entry 'cbeb72cc9799dbe380701ecbfb56408f' for key 'PRIMARY'
mysql error number: 1062
mysql version: 10.5.25-MariaDB-ubu2004-log
php version: 5.6.40-nmm8
Date: 21.05.2024 @ 23:08
Script: /profile.php?userid=626&sid=b49d6f4ba124e0da2e4e1882cd0e7b66
Referer: