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 ('15c480e89e286ad7deb9f75f0b9e1ea1','0','18.191.240.222','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715784156','jgs_portal_links.php?action=suche2_starten&buchstabe=R&sid=f854d3758a89416c5d34ab558663d428','0','0','')
mysql error: Duplicate entry '15c480e89e286ad7deb9f75f0b9e1ea1' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 15.05.2024 @ 16:42
Script: /jgs_portal_links.php?action=suche2_starten&buchstabe=R&sid=f854d3758a89416c5d34ab558663d428
Referer: