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 ('a7003b9736490e1d0c9f1e27a0c81b74','0','13.58.39.23','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715391770','register.php?sid=e2ac1b27608c95abe6bf1ead811f0f39','0','0','')
mysql error: Duplicate entry 'a7003b9736490e1d0c9f1e27a0c81b74' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 11.05.2024 @ 03:42
Script: /register.php?sid=e2ac1b27608c95abe6bf1ead811f0f39
Referer: http://wehrbauten.de/register.php?sid=e2ac1b27608c95abe6bf1ead811f0f39