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 ('c6d67f3e82e095f1613cc888dbd757b4','0','18.224.95.38','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714168504','formmail.php?userid=8044&sid=b63e9eadadea2ece8f0975dc733cae05','0','0','')
mysql error: Duplicate entry 'c6d67f3e82e095f1613cc888dbd757b4' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 26.04.2024 @ 23:55
Script: /formmail.php?userid=8044&sid=b63e9eadadea2ece8f0975dc733cae05
Referer: