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 ('6e9e8b74fcf23afc9d6be5e3db87902e', -1, 1563676207, 1563676207, '035149e9', 20, 0, 0)

Line : 189
File : sessions.php