jucai/app/Admin/Extensions/Form/ValueForm.php

<?php
namespace App\Admin\Extensions\Form;

use Encore\Admin\Widgets\Form;

class ValueForm extends Form
{

    /**
     * Get variables for render form.
     *
     * @return array
     */
    protected function getVariables()
    {
        return [
            'fields'     => $this->fields,
            'attributes' => $this->formatAttribute(),
            'method'     => $this->attributes['method'],
            'buttons'    => $this->buttons,
        ];
    }
}