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 ('e9cde40a5b2754f3621adc81deb87f82','0','3.14.79.97','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715732083','formmail.php?userid=308&sid=4a18ec0de8442bae1a1730b9397d29b6','0','0','')
mysql error: Duplicate entry 'e9cde40a5b2754f3621adc81deb87f82' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 15.05.2024 @ 02:14
Script: /formmail.php?userid=308&sid=4a18ec0de8442bae1a1730b9397d29b6
Referer: