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 ('15d493581d37ceba582abf9afe32e11f','0','18.118.211.163','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1745281070','report.php?postid=3455','0','0','')
mysql error: Duplicate entry '15d493581d37ceba582abf9afe32e11f' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 22.04.2025 @ 02:17
Script: /report.php?postid=3455
Referer: http://gttempel.de/report.php?postid=3455