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 ('91bab8ce1d7725b4188c9264cdf328d1','0','18.216.186.164','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715373329','thread.php?threadid=1406&sid=2702eec12a1805a89c1471377bd1091e','0','0','')
mysql error: Duplicate entry '91bab8ce1d7725b4188c9264cdf328d1' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 10.05.2024 @ 22:35
Script: /thread.php?threadid=1406&sid=2702eec12a1805a89c1471377bd1091e
Referer: http://wehrbauten.de/thread.php?threadid=1406&sid=2702eec12a1805a89c1471377bd1091e