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 ('9bbf7b8d76f7997f97cc3b3edbd291c0','0','18.188.72.75','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715433962','thread.php?threadid=1398&page=1&sid=4af559a26db97a53032c552691a69918','0','0','')
mysql error: Duplicate entry '9bbf7b8d76f7997f97cc3b3edbd291c0' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 11.05.2024 @ 15:26
Script: /thread.php?threadid=1398&page=1&sid=4af559a26db97a53032c552691a69918
Referer: