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 ('2407d357f3a2f6ca626b48a8029b6305','0','18.225.55.151','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715891091','calendar.php?sid=abb4343a85e003f34601c14aced598b5','0','0','')
mysql error: Duplicate entry '2407d357f3a2f6ca626b48a8029b6305' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 16.05.2024 @ 22:24
Script: /calendar.php?sid=abb4343a85e003f34601c14aced598b5
Referer: