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 ('a5496cd6e3e6920c936b10b9cce1350b','0','3.133.139.105','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715831697','thread.php?goto=lastpost&threadid=1409&sid=8c4c6ad6ef2a56574c219615c6875fd2','0','0','')
mysql error: Duplicate entry 'a5496cd6e3e6920c936b10b9cce1350b' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 16.05.2024 @ 05:54
Script: /thread.php?goto=lastpost&threadid=1409&sid=8c4c6ad6ef2a56574c219615c6875fd2
Referer: http://wehrbauten.de/thread.php?goto=lastpost&threadid=1409&sid=8c4c6ad6ef2a56574c219615c6875fd2