After update forms no longer show up on page

<form name=""
      action="/en/contact/_main"
      method="POST"
                  class=" "
            >

  <input type="hidden" name="__form-name__" value="" />

    <div class="buttons">

    </div>

  <input type="hidden" name="__unique_form_id__" value="218Aw4maVKrWNjihkxL6" />  <input type="hidden" name="form-nonce" value="9d2ac7ce7e7dfcf78d60a0425bfc24ae" />
</form>

form:
    name: my-nice-form
    action: /contact
    fields:
        -
            name: name
            id: name
            label: Name
            classes: 'form-control form-control-lg'
            placeholder: 'Enter your name'
            autocomplete: 'on'
            type: text
            validate:
                required: true
        -
            name: email
            id: email
            classes: 'form-control form-control-lg'
            label: Email
            placeholder: 'Enter your email address'
            type: email
            validate:
                rule: email
                required: true
        -
            name: message
            label: Message
            classes: 'form-control form-control-lg'
            size: long
            placeholder: 'Enter your message'
            type: textarea
            validate:
                required: true
    buttons:
        -
            type: submit
            value: Submit
            class: 'btn btn-primary btn-block'
    process:
        -
            email:
                from: '{{ config.plugins.email.from }}'
                to:
                    - '{{ config.plugins.email.from }}'
                    - '{{ form.value.email }}'
                subject: '[Feedback] {{ form.value.name|e }}'
                body: '{% include ''forms/data.html.twig'' %}'
        -
            save:
                fileprefix: feedback-
                dateformat: Ymd-His-u
                extension: txt
                body: '{% include ''forms/data.txt.twig'' %}'
        -
            message: 'Thank you for your feedback!'
        -
            display: thankyou