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 ('3dd942c4e7ba33a37e2bc0431249cd55','0','18.222.109.141','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715003393','register.php?sid=71a1a70785dc331bfb8a2daa1dbd4ba3','0','0','')
mysql error: Duplicate entry '3dd942c4e7ba33a37e2bc0431249cd55' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 06.05.2024 @ 15:49
Script: /register.php?sid=71a1a70785dc331bfb8a2daa1dbd4ba3
Referer: