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 ('1bff2a6d4999c857b1cbe76eafde6a16','0','216.73.216.235','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1749463710','thread.php?postid=16072','0','0','')
mysql error: Duplicate entry '1bff2a6d4999c857b1cbe76eafde6a16' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 09.06.2025 @ 12:08
Script: /thread.php?postid=16072
Referer: