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 ('e51697bc96d336055a4aba0b7f8d06b0','0','216.73.216.11','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1757297296','addreply.php?action=quote&postid=17823','0','0','')
mysql error: Duplicate entry 'e51697bc96d336055a4aba0b7f8d06b0' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 08.09.2025 @ 04:08
Script: /addreply.php?action=quote&postid=17823
Referer: