phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'f9c64ddde8bca7c209457785d1f12c87' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('f9c64ddde8bca7c209457785d1f12c87', -1, 1754479104, 1754479104, 'd849d839', -9, 0)

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