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 ('af07cf259238db40e6ec68c5c2af60ad','0','18.225.56.194','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715665979','thread.php?goto=lastpost&threadid=2482&sid=30f7fc59d2d1b81a8163a5f836f52775','0','0','')
mysql error: Duplicate entry 'af07cf259238db40e6ec68c5c2af60ad' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 14.05.2024 @ 07:52
Script: /thread.php?goto=lastpost&threadid=2482&sid=30f7fc59d2d1b81a8163a5f836f52775
Referer: