phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '904ee95332d5fc88503e48d2a4fdbb17' 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 ('904ee95332d5fc88503e48d2a4fdbb17', -1, 1768516556, 1768516556, 'd849d8d1', 13, 0, 0)

Line : 187
File : sessions.php