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 ('51194c81c2aa5a0c7a87bc9733197f98','0','18.189.180.244','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714388220','thread.php?goto=nextnewest&threadid=1844&sid=778142a62f0d5805ca5e7429b4b02471','0','0','')
mysql error: Duplicate entry '51194c81c2aa5a0c7a87bc9733197f98' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 29.04.2024 @ 12:57
Script: /thread.php?goto=nextnewest&threadid=1844&sid=778142a62f0d5805ca5e7429b4b02471
Referer: http://wehrbauten.de/thread.php?goto=nextnewest&threadid=1844&sid=778142a62f0d5805ca5e7429b4b02471