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 ('5da7c5b7091c2e03ed4b178a1fc3f038', -1, 1582979656, 1582979656, '22e2f446', 2, 0, 0)

Line : 191
File : sessions.php