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 ('f6ec6438adba8e9b11e10e367f147ab6','0','3.144.48.3','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715532649','board.php?boardid=239&sid=beb1c7d1eb8af667aa34e7fd0114ac65','0','0','')
mysql error: Duplicate entry 'f6ec6438adba8e9b11e10e367f147ab6' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 12.05.2024 @ 18:50
Script: /board.php?boardid=239&sid=beb1c7d1eb8af667aa34e7fd0114ac65
Referer: