[Backend] Correcitf quantity_max

common/logic/Product/Product/Service/ProductSolver.php

@@ -206,7 +206,7 @@ class ProductSolver extends AbstractService implements SolverInterface
         $quantityMax = $product->quantity_max;
         if($this->isProductQuantityMaxDefinedByDay($product, $day)) {
             $fieldQuantityMax = $this->getProductFieldNameQuantityMax($day);
-            $quantityMax = $product->$fieldQuantityMax;
+            $quantityMax = (float) $product->$fieldQuantityMax;
         }
         
         return $quantityMax;