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 ('3c0446edd3c44b6bdd0225e049c4afff','0','3.22.60.167','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715583710','register.php?sid=6a7e2acb9690905ffa699270b75b3150','0','0','')
mysql error: Duplicate entry '3c0446edd3c44b6bdd0225e049c4afff' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 13.05.2024 @ 09:01
Script: /register.php?sid=6a7e2acb9690905ffa699270b75b3150
Referer: