phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'f84da3d968b24b66d20ef93ab90ee57c' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('f84da3d968b24b66d20ef93ab90ee57c', -1, 1770515108, 1770515108, 'd849d802', -9, 0)

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