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 ('de14acbec0a91274a3f08d6fe402b46b','0','3.145.81.232','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715956037','calendar.php?sid=249b4ab4d63d87cf744da53a1f5e462a','0','0','')
mysql error: Duplicate entry 'de14acbec0a91274a3f08d6fe402b46b' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 4.4.9
Date: 17.05.2024 @ 16:27
Script: /Forum/calendar.php?sid=249b4ab4d63d87cf744da53a1f5e462a
Referer: