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 ('0251e86ca2953d3612d7ddf5ff7d47d5','0','216.73.216.120','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1752182350','addreply.php?postid=8847','0','0','')
mysql error: Duplicate entry '0251e86ca2953d3612d7ddf5ff7d47d5' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 10.07.2025 @ 23:19
Script: /addreply.php?postid=8847
Referer: