phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 2

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('86b08e8b662ff63de48760546c4b19e1', -1, 1563305267, 1563305267, '12d16807', 51, 0, 0)

Line : 189
File : sessions.php