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 ('6ec02464276dd1a35649e072d631136b', -1, 1563611339, 1563611339, '365145dc', 35, 0, 0)

Line : 189
File : sessions.php