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 ('0c0936c4ad4e507f6dcbe501d8d362f6','0','18.117.184.189','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715730557','board.php?boardid=31&sid=d1dc8b862056b1a1a96dfb42e2bd337b','0','0','')
mysql error: Duplicate entry '0c0936c4ad4e507f6dcbe501d8d362f6' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 15.05.2024 @ 01:49
Script: /board.php?boardid=31&sid=d1dc8b862056b1a1a96dfb42e2bd337b
Referer: http://wehrbauten.de/board.php?boardid=31&sid=d1dc8b862056b1a1a96dfb42e2bd337b