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 ('bd4bf50219d7f94a3b267f7158f7a4ee','0','18.224.38.3','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715486253','usercp.php?action=addsubscription&threadid=1502&sid=9d9f29a88db97841d45ef5e9deb55de0','0','0','')
mysql error: Duplicate entry 'bd4bf50219d7f94a3b267f7158f7a4ee' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 12.05.2024 @ 05:57
Script: /usercp.php?action=addsubscription&threadid=1502&sid=9d9f29a88db97841d45ef5e9deb55de0
Referer: http://wehrbauten.de/usercp.php?action=addsubscription&threadid=1502&sid=9d9f29a88db97841d45ef5e9deb55de0