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 ('268a307dfcd6fd4492e1c9ad20f1c4b3','0','216.73.216.34','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1751763021','addreply.php?postid=15260','0','0','')
mysql error: Duplicate entry '268a307dfcd6fd4492e1c9ad20f1c4b3' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 06.07.2025 @ 02:50
Script: /addreply.php?postid=15260
Referer: