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 ('dd13ffab634981b4e856bf10cdf5faed','0','18.222.109.213','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715739650','memberslist.php?sid=a4754ad99209563f85ca1c842a37e5ef','0','0','')
mysql error: Duplicate entry 'dd13ffab634981b4e856bf10cdf5faed' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 15.05.2024 @ 04:20
Script: /memberslist.php?sid=a4754ad99209563f85ca1c842a37e5ef
Referer: http://wehrbauten.de/memberslist.php?sid=a4754ad99209563f85ca1c842a37e5ef