Formfield in modular page does not appaer

I used this instruction:

to set up a contact form on my modular webpage which uses the antimatter theme.
Unfortunatly the formfied doesn’t appear. The path of my contact directory is: /home/_kontakt
In that directory you can find the and the

This is my

title: Kontakt
menu: Kontakt
cache_enable: false

and this is my

    item: '@self.modular'

    action: home 
    name: kontaktformular
    classes: clearfix
        - type: submit
          value: Nachricht versenden
          classes: btn btn-success btn-block

        - email:
            from: ""
              - "{{ }}"
              - ""
            subject: "GWB Website Kontakt: {{|e }}"
            body: "{% include 'forms/data.html.twig' %}"
        - save:
            fileprefix: feedback-
            dateformat: Ymd-His-u
            extension: txt
            body: "{% include 'forms/data.txt.twig' %}"
        - message: Danke für Ihre Nachricht!
        - display: /kontakt/thankyou/ 

I can’t figure out where i did the mistake.
Hope someone can see where it is.

The structure must be


Is that what you have?

Thanks for your answer i figured it out. I had both files and in the same Folder