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 ('0fefc0ffe1609c0483deeb45c8f5f8fe','0','18.221.85.142','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715844707','thread.php?goto=lastpost&threadid=2204&sid=0774f7935f9606354f2cdc49ff531761','0','0','')
mysql error: Duplicate entry '0fefc0ffe1609c0483deeb45c8f5f8fe' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 16.05.2024 @ 09:31
Script: /thread.php?goto=lastpost&threadid=2204&sid=0774f7935f9606354f2cdc49ff531761
Referer: http://wehrbauten.de/thread.php?goto=lastpost&threadid=2204&sid=0774f7935f9606354f2cdc49ff531761