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 ('99b0310ad1863be181dad2cc5e78bf74','0','3.142.255.113','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715707236','board.php?boardid=412&sid=723511e1b63366d3b2c6bda03ae690c2','0','0','')
mysql error: Duplicate entry '99b0310ad1863be181dad2cc5e78bf74' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 14.05.2024 @ 19:20
Script: /board.php?boardid=412&sid=723511e1b63366d3b2c6bda03ae690c2
Referer: http://wehrbauten.de/board.php?boardid=412&sid=723511e1b63366d3b2c6bda03ae690c2