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 ('6617de15e0dc638848474e5c0e5d5aea','0','18.220.16.184','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714955862','board.php?boardid=258&sid=a7c0e5cb73abb477d672227167901390','0','0','')
mysql error: Duplicate entry '6617de15e0dc638848474e5c0e5d5aea' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 06.05.2024 @ 02:37
Script: /board.php?boardid=258&sid=a7c0e5cb73abb477d672227167901390
Referer: http://wehrbauten.de/board.php?boardid=258&sid=a7c0e5cb73abb477d672227167901390