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 ('b630341a076d221437026c20c80c1950','0','18.220.178.207','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714841750','usercp.php?action=addsubscription&threadid=2029&sid=f19ec2880e48cb564c906c363adfaf7e','0','0','')
mysql error: Duplicate entry 'b630341a076d221437026c20c80c1950' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 04.05.2024 @ 18:55
Script: /usercp.php?action=addsubscription&threadid=2029&sid=f19ec2880e48cb564c906c363adfaf7e
Referer: http://wehrbauten.de/usercp.php?action=addsubscription&threadid=2029&sid=f19ec2880e48cb564c906c363adfaf7e