component edit fix

modules/custom/arlista/src/Form/Component/ComponentEdit.php

         $component->setAxicoIdName($values['axico_id_name']);
         $component->setSif($values['sif']);
         /* @var $manufacturer Manufacturer */
-        $manufacturer = $this->getManufacturerFactory()->find($values['parent_manufacturer_id'][0]);
+        $manufacturer = $this->getManufacturerFactory()->find($values['parent_manufacturer_id']);
         if ($component->isNew()) {
             $component->setParentManufacturerId($manufacturer->getId());
             $component = $this->getComponentFactory()->save($component);