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 ('df1b47cc015834040852153eddf97f5d','0','18.118.19.162','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715705112','jgs_portal_box.php?id=5&sid=27ecd8c426aaccf9db324fcb3b48ec61','0','0','')
mysql error: Duplicate entry 'df1b47cc015834040852153eddf97f5d' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 14.05.2024 @ 18:45
Script: /jgs_portal_box.php?id=5&sid=27ecd8c426aaccf9db324fcb3b48ec61
Referer: http://wehrbauten.de/jgs_portal_box.php?id=5&sid=27ecd8c426aaccf9db324fcb3b48ec61