SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('15f0abf0544e9c3814882b4c564066c9','0','18.224.0.25','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715298487','thread.php?goto=lastpost&threadid=2030&sid=3d1642b3248f75c25a0544a3c82c2930','0','0','')
mysql error: Duplicate entry '15f0abf0544e9c3814882b4c564066c9' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 10.05.2024 @ 01:48
Script: /thread.php?goto=lastpost&threadid=2030&sid=3d1642b3248f75c25a0544a3c82c2930
Referer: http://wehrbauten.de/thread.php?goto=lastpost&threadid=2030&sid=3d1642b3248f75c25a0544a3c82c2930