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 ('d6457749e9da7e6090df0fa8fd485251','0','18.221.142.39','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1744985603','report.php?postid=8536','0','0','')
mysql error: Duplicate entry 'd6457749e9da7e6090df0fa8fd485251' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 18.04.2025 @ 16:13
Script: /report.php?postid=8536
Referer: http://gttempel.de/report.php?postid=8536