phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '243a6e508145f76c49fe7f5758d62f6e' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('243a6e508145f76c49fe7f5758d62f6e', -1, 1771352272, 1771352272, 'd849d87b', 2, 0)

Line : 180
File : /www/includes/sessions.php