Join INNER field reference other table doesn't show

when you join a table, it doesn’t select the column automatically. Thats how sql works.

SELECT
  Countries.ID,
  Countries.Negara
FROM Countries
INNER JOIN Users ON Users.countrie_id = Countries.ID

is not the same as

SELECT
  Countries.ID,
  Countries.Negara,
  Users.ID,
  Users.Nama
FROM Countries
INNER JOIN Users ON Users.countrie_id = Countries.ID

Are not the same.
In your code you are using the first approach.

I suggest follow this approach