MOZAMBICO/App/Views/Elements/Survey/input-file.part.php

<div class="custom-file margin-bottom-10">
	<input type="file" class="custom-file-input field-file field-survey-file field-survey-<?php echo $input_id; ?> <?php echo $extra_class; ?>" id="<?php echo $input_id; ?>" name="data[file][]">
	<label class="custom-file-label" for="<?php echo $input_id; ?>"></label>
	
	<input type="hidden" name="data[file][][required]" value="<?php echo isset($required) ? $required : 0; ?>">
</div>