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 ('ecd60d74408a1addfa26d8d570e15863','0','3.135.221.17','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715706995','thread.php?goto=lastpost&threadid=519&sid=96ca8f7ef120d6fc965fc4a4e15b0b57','0','0','')
mysql error: Duplicate entry 'ecd60d74408a1addfa26d8d570e15863' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 14.05.2024 @ 19:16
Script: /thread.php?goto=lastpost&threadid=519&sid=96ca8f7ef120d6fc965fc4a4e15b0b57
Referer: http://wehrbauten.de/thread.php?goto=lastpost&threadid=519&sid=96ca8f7ef120d6fc965fc4a4e15b0b57