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 ('6d4de058c8cb2395a01167945d2b02cb','0','18.118.227.69','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714121495','register.php?sid=bc2fa0be54a26fd43cd5e54ed2236cb9','0','0','')
mysql error: Duplicate entry '6d4de058c8cb2395a01167945d2b02cb' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 26.04.2024 @ 10:51
Script: /register.php?sid=bc2fa0be54a26fd43cd5e54ed2236cb9
Referer: http://wehrbauten.de/register.php?sid=bc2fa0be54a26fd43cd5e54ed2236cb9