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 ('cae56ef700e7b9f9c6fe4fd93768a579','0','18.189.14.219','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714624153','board.php?boardid=241&sid=b5938d523f99d68b6afe0f3ca531c391','0','0','')
mysql error: Duplicate entry 'cae56ef700e7b9f9c6fe4fd93768a579' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 02.05.2024 @ 06:29
Script: /board.php?boardid=241&sid=b5938d523f99d68b6afe0f3ca531c391
Referer: http://wehrbauten.de/board.php?boardid=241&sid=b5938d523f99d68b6afe0f3ca531c391