Erreur 500 : argument 1 passed to Lc\SovBundle\Repository\AbstractStore::getOneById() must be of the type int, null given, called in Lc/CaracoleBundle/Controller/Product/FavoriteController.php on line 93 #411

Controller/Product/FavoriteController.php

     private function _getProductFamily($request)
     {
         $idProductFamily = $request->request->get('idProductFamily');
-        $productFamily = $this->getProductFamilyContainer()->getStore()->getOneById($idProductFamily);
 
-        if ($productFamily) {
+        if($idProductFamily) {
+            $productFamily = $this->getProductFamilyContainer()->getStore()->getOneById($idProductFamily);
+        }
+
+        if (isset($productFamily) && $productFamily) {
             return $productFamily;
         } else {
             throw new \ErrorException('Ce produit est introuvable');