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 ('9c5f92d94e9626795a6e7a989f41a5f7','0','3.144.36.141','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714742867','thread.php?goto=lastpost&threadid=553&sid=3c984cef4e2062f3c6093f0d4dd1c0de','0','0','')
mysql error: Duplicate entry '9c5f92d94e9626795a6e7a989f41a5f7' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 03.05.2024 @ 15:27
Script: /thread.php?goto=lastpost&threadid=553&sid=3c984cef4e2062f3c6093f0d4dd1c0de
Referer: http://wehrbauten.de/thread.php?goto=lastpost&threadid=553&sid=3c984cef4e2062f3c6093f0d4dd1c0de