phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'ff9dcf0d406b1bf61daf1c230f1fb4fc' for key 1

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('ff9dcf0d406b1bf61daf1c230f1fb4fc', -1, 1716377600, 1716377600, '12ddc1ff', -1, 0, 0)

Line : 187
File : sessions.php