SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('e63b76bfe084b430390e0d5c66ecd59c','0','3.133.121.160','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715341033','board.php?boardid=147&sid=e9c61f2724dfe8de8bf6b173ca284c7d','0','0','')
mysql error: Duplicate entry 'e63b76bfe084b430390e0d5c66ecd59c' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 10.05.2024 @ 13:37
Script: /board.php?boardid=147&sid=e9c61f2724dfe8de8bf6b173ca284c7d
Referer: