material_admin-8.x-1.0-alpha7/templates/form/input--file.html.twig

{#
/**
 * @file
 * Theme override for an 'input' #type form element.
 *
 * Available variables:
 * - attributes: A list of HTML attributes for the input element.
 * - children: Optional additional rendered elements.
 *
 * @see template_preprocess_input()
 */
#}
<div class="btn file-upload-btn">
	<span><i class="material-icons">file_upload</i> </span>
	<input{{ attributes }} />
</div>
	{{ children }}   
	<div class="file-path-wrapper">
    <input class="file-path validate" type="text" placeholder="{% trans %}Upload{% endtrans %}">
 	</div>