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 ('14a9f636b073618ea4566ab6e50facf0', -1, 1563305081, 1563305081, '12d16807', 17, 0, 0)

Line : 189
File : sessions.php