SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6 pl2): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('df5f008a4dae914383aee2eacd3ea23a','0','216.73.216.51','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1752886795','thread.php?postid=4315','0','0','')
mysql error: Duplicate entry 'df5f008a4dae914383aee2eacd3ea23a' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 19.07.2025 @ 02:59
Script: /thread.php?postid=4315
Referer: