phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'fbff935824670e7bffcf5f4fd9c682bf' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('fbff935824670e7bffcf5f4fd9c682bf', -1, 1769387479, 1769387479, 'd849d83c', 1, 0, 0)

Line : 187
File : sessions.php