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 ('845a3ab9ea19b7aeb4079e1b92bbb9fb','0','18.191.240.80','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715399699','thread.php?goto=lastpost&threadid=2133&sid=91c8f43dcf153554bd26f43c9f71255b','0','0','')
mysql error: Duplicate entry '845a3ab9ea19b7aeb4079e1b92bbb9fb' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 11.05.2024 @ 05:54
Script: /thread.php?goto=lastpost&threadid=2133&sid=91c8f43dcf153554bd26f43c9f71255b
Referer: http://wehrbauten.de/thread.php?goto=lastpost&threadid=2133&sid=91c8f43dcf153554bd26f43c9f71255b