SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6 pl 2): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('969462b966aae381e41f3c48f84a8a1b','0','13.59.220.223','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)','1715843655','thread.php?threadid=50643&goto=lastpost&sid=86f3182901b62ab98ed4be96dc5e52cd','0','0','')
mysql error: Duplicate entry '969462b966aae381e41f3c48f84a8a1b' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.44
php version: 5.2.17
Date: 16.05.2024 @ 09:14
Script: /thread.php?threadid=50643&goto=lastpost&sid=86f3182901b62ab98ed4be96dc5e52cd
Referer: