I am building form with multiple image upload and I can\'t find solution for problem that is mentioned in title. To help me with that I included VichUploaderBundle
use Symfony\Component\Form\Extension\Core\Type\FileType;
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->add('image', FileType::class);
}
In Symfony 3 a form type is always passed by its fully qualified class name