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 ('6d0811539f9e7b99aa09261308ff1a48','0','3.144.193.129','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714944714','thread.php?goto=lastpost&threadid=609&sid=955a27ad0e6d5de7b427d7ba16186e88','0','0','')
mysql error: Duplicate entry '6d0811539f9e7b99aa09261308ff1a48' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 05.05.2024 @ 23:31
Script: /thread.php?goto=lastpost&threadid=609&sid=955a27ad0e6d5de7b427d7ba16186e88
Referer: http://wehrbauten.de/thread.php?goto=lastpost&threadid=609&sid=955a27ad0e6d5de7b427d7ba16186e88