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 ('7b35a265abc145bbd797ef80d1715faf','0','3.144.84.155','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715317792','thread.php?goto=lastpost&threadid=1646&sid=d019a3aed1b5d6348c22e7063e14ad95','0','0','')
mysql error: Duplicate entry '7b35a265abc145bbd797ef80d1715faf' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 10.05.2024 @ 07:09
Script: /thread.php?goto=lastpost&threadid=1646&sid=d019a3aed1b5d6348c22e7063e14ad95
Referer: http://wehrbauten.de/thread.php?goto=lastpost&threadid=1646&sid=d019a3aed1b5d6348c22e7063e14ad95