phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('b3d235a6d7af4cfd49f96d8a168f247e', -1, 1582723015, 1582723015, '035ecaac', 26, 0, 0)

Line : 191
File : sessions.php