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 ('c266cedbb060d9b16042b1796e20948c', -1, 1563304916, 1563304916, '12d16807', 40, 0, 0)

Line : 189
File : sessions.php