phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'ad478cae867a9455a70905377dcb9c7b' 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 ('ad478cae867a9455a70905377dcb9c7b', -1, 1714962616, 1714962616, '1276c1e8', -8, 0, 0)

Line : 187
File : sessions.php