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 ('11f8933ee1558b031d8e81d33bfbc5aa','0','3.145.156.250','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714874982','board.php?boardid=398&sid=4567b4ede25d87eb093edc9c319bb2df','0','0','')
mysql error: Duplicate entry '11f8933ee1558b031d8e81d33bfbc5aa' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 05.05.2024 @ 04:09
Script: /board.php?boardid=398&sid=4567b4ede25d87eb093edc9c319bb2df
Referer: http://wehrbauten.de/board.php?boardid=398&sid=4567b4ede25d87eb093edc9c319bb2df