Ruby on Rails

Ruby is case-sensitive. In your first jpeg, change the `PRESENT?` method
to `present?` (on line 16 of your UsersController file)

Your second jpeg is showing that you haven't initialized your @user
object in the index action. You can initialize it in the UsersController
file, in the `index` method.

In your last jpeg, the error is the same error as the first jpeg.

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