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 ('4918913d406946e94388061bfe299829','0','3.137.187.233','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714629487','thread.php?threadid=1925&goto=lastpost&sid=82433a880591d0a0e9d0de51387b157f','0','0','')
mysql error: Duplicate entry '4918913d406946e94388061bfe299829' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 02.05.2024 @ 07:58
Script: /thread.php?threadid=1925&goto=lastpost&sid=82433a880591d0a0e9d0de51387b157f
Referer: http://wehrbauten.de/thread.php?threadid=1925&goto=lastpost&sid=82433a880591d0a0e9d0de51387b157f