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 ('ddec0be7d89aeba60856221de64aacb7','0','18.216.186.164','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715133591','jgs_galerie.php?sid=d269c94b0b0bf6f8376473505ad3521b','0','0','')
mysql error: Duplicate entry 'ddec0be7d89aeba60856221de64aacb7' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 08.05.2024 @ 03:59
Script: /jgs_galerie.php?sid=d269c94b0b0bf6f8376473505ad3521b
Referer: http://wehrbauten.de/jgs_galerie.php?sid=d269c94b0b0bf6f8376473505ad3521b