Key "label_attr" issue when using SubmitType in FormBuilder

[herrnesto]

Hello, I have a problem with the form builder. I use the form in the code below, but as soon as I add the submit button, I face an error. When i remove the button the form works fine. What could cause this issue?

This is the error:

Quote

Key "label_attr" for array with keys "value, attr, form, id, name, full_name, disabled, label, label_format, multipart, block_prefixes, unique_block_prefix, translation_domain, cache_key, clicked" does not exist in "@PrestaShop/Admin/macros.html.twig".

 

And this is the form:

<?php

namespace Xyz\Members\Forms;

use Symfony\Component\Form\Extension\Core\Type\ChoiceType;
use Symfony\Component\Form\Extension\Core\Type\DateType;
use Symfony\Component\Form\Extension\Core\Type\TextType;
use Symfony\Component\Form\Extension\Core\Type\SubmitType;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;

class MemberType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('email', TextType::class, [
                'attr' => [
                    'placeholder' => "The E-Mail"
                ]
            ])
            ->add('member_code', TextType::class, [
                'attr' => [
                    'placeholder' => "The Member Code"
                ]
            ])
            ->add('active', ChoiceType::class, [
                'choices' => [
                    'Aktiv' => 1,
                    'Inaktiv' => 0,
                ],
            ])
            ->add('expiration_date', DateType::class, [
                'attr' => [
                    'placeholder' => "expiration_date"
                ]
            ])
            ->add('send', SubmitType::class);

        parent::buildForm($builder, $options); // TODO: Change the autogenerated stub
    }
}

I use PrestaShop 1.7.8.2

Edited January 22, 2022 by herrnesto
added more infos (see edit history)

[herrnesto]

Solved: missed the form_widget(form)

{% block content %}
    {{ form_start(form) }}
    {{ form_widget(form) }}
    {{ form_end(form) }}
{% endblock %}