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 ('adf23e97c88c3292247964504b21e8e8','0','3.138.113.188','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714892523','jgs_portal.php?sid=621e2426ee8c20fd68dab231a5b14a6a','0','0','')
mysql error: Duplicate entry 'adf23e97c88c3292247964504b21e8e8' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 05.05.2024 @ 09:02
Script: /jgs_portal.php?sid=621e2426ee8c20fd68dab231a5b14a6a
Referer: http://wehrbauten.de/jgs_portal.php?sid=621e2426ee8c20fd68dab231a5b14a6a