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 ('89bf0f6af1f7eba6b3a8d8e603c9d634','0','3.144.182.250','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715525711','board.php?boardid=136&sid=97c64f3ae6e27bdf8c1789048f8b3c95','0','0','')
mysql error: Duplicate entry '89bf0f6af1f7eba6b3a8d8e603c9d634' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 12.05.2024 @ 16:55
Script: /board.php?boardid=136&sid=97c64f3ae6e27bdf8c1789048f8b3c95
Referer: http://wehrbauten.de/board.php?boardid=136&sid=97c64f3ae6e27bdf8c1789048f8b3c95