phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO phpbb2_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('22db6e8c1432f8a31bc46aaf19118d48', -1, 1596730672, 1596730672, '03eb6bd1', 0, 0, 0)

Line : 187
File : sessions.php