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 ('cb81d4ae876a2ae019c4fdf62167e4a6','0','13.58.200.63','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715837899','board.php?boardid=483&sid=6dbb0d2c04c6c451784e97908a4255da','0','0','')
mysql error: Duplicate entry 'cb81d4ae876a2ae019c4fdf62167e4a6' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 16.05.2024 @ 07:38
Script: /board.php?boardid=483&sid=6dbb0d2c04c6c451784e97908a4255da
Referer: http://wehrbauten.de/board.php?boardid=483&sid=6dbb0d2c04c6c451784e97908a4255da