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 ('3ce546b6c3bb8a8b0de67175eba0fa6f', -1, 1560740688, 1560740688, '22cf4e9d', -4, 0, 0)

Line : 189
File : sessions.php