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 ('41c33bbecf44e3bbb5bc68564c96db4f','0','216.73.217.6','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1752056094','linkus.php?sid=79386b7f3a28e4bb49d2b59dc196cb65','0','0','')
mysql error: Duplicate entry '41c33bbecf44e3bbb5bc68564c96db4f' for key 'PRIMARY'
mysql error number: 1062
mysql version: 10.1.26-MariaDB-0+deb9u1
php version: 5.3.29
Date: 09.07.2025 @ 12:14
Script: /wbb2/linkus.php?sid=79386b7f3a28e4bb49d2b59dc196cb65
Referer: