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 ('d4c8f01a18e1a184f9c2562f89964c1e', -1, 1563676505, 1563676505, '035149e9', -4, 0, 0)

Line : 189
File : sessions.php