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 ('e6e53a3bfd64346cc4b8cc29f31db917','0','3.145.191.169','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715027888','thread.php?goto=lastpost&threadid=904&sid=87f1ed9366d57f561e603dcdd55928fe','0','0','')
mysql error: Duplicate entry 'e6e53a3bfd64346cc4b8cc29f31db917' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 06.05.2024 @ 22:38
Script: /thread.php?goto=lastpost&threadid=904&sid=87f1ed9366d57f561e603dcdd55928fe
Referer: http://wehrbauten.de/thread.php?goto=lastpost&threadid=904&sid=87f1ed9366d57f561e603dcdd55928fe