phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '0ace422a17f78d006e53589fffcfb916' 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 ('0ace422a17f78d006e53589fffcfb916', -1, 1425154859, 1425154859, '3690ed30', -1, 0, 0)

Line : 216
File : sessions.phtml