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 ('cb9dce3b7934a1f2b6ef7135c7e15bf8','0','3.15.226.5','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1745053685','report.php?postid=15253','0','0','')
mysql error: Duplicate entry 'cb9dce3b7934a1f2b6ef7135c7e15bf8' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 19.04.2025 @ 11:08
Script: /report.php?postid=15253
Referer: http://gttempel.de/report.php?postid=15253