phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '1407f0632b70f4d00cafde11758755f4' 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 ('1407f0632b70f4d00cafde11758755f4', -1, 1758394692, 1758394692, 'd849d88b', -9, 0, 0)

Line : 187
File : sessions.php