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 ('2400700fe444d715d506254d95b86965','0','18.221.165.246','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714976642','thread.php?goto=lastpost&threadid=592&sid=4316415fd362aa36009748ebfc656be9','0','0','')
mysql error: Duplicate entry '2400700fe444d715d506254d95b86965' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 06.05.2024 @ 08:24
Script: /thread.php?goto=lastpost&threadid=592&sid=4316415fd362aa36009748ebfc656be9
Referer: http://wehrbauten.de/thread.php?goto=lastpost&threadid=592&sid=4316415fd362aa36009748ebfc656be9