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 ('c15a1b41e0bd8e662d2b1f32c5fb68b0', -1, 1563420779, 1563420779, '035149e9', 3, 0, 0)

Line : 189
File : sessions.php