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 ('62a6859cda6ce64f30a76e4e1ec389f5','0','216.73.216.86','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1749382103','thread.php?postid=23476','0','0','')
mysql error: Duplicate entry '62a6859cda6ce64f30a76e4e1ec389f5' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 08.06.2025 @ 13:28
Script: /thread.php?postid=23476
Referer: