SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6 pl2): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('55c376adcb1d518e28854540a6e09378','0','18.219.12.88','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1734857542','attachment.php?attachmentid=9646','0','0','')
mysql error: Duplicate entry '55c376adcb1d518e28854540a6e09378' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 22.12.2024 @ 09:52
Script: /attachment.php?attachmentid=9646
Referer: http://gttempel.de/attachment.php?attachmentid=9646