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 ('3464e870c2377df36611b9e1b3531eaf','0','3.145.20.193','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715596190','calendar.php?sid=56ec15b86c1817911c486d5842275ff1','0','0','')
mysql error: Duplicate entry '3464e870c2377df36611b9e1b3531eaf' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 13.05.2024 @ 12:29
Script: /calendar.php?sid=56ec15b86c1817911c486d5842275ff1
Referer: