Correctifs refactoring Unit

backend/controllers/DocumentController.php

                     'order',
                     function ($product) use ($document, $userProducer, $pointSale, $productModule) {
                         return array_merge($product->getAttributes(), [
-                            'unit_coefficient' => $productModule->getSolver()->getUnitCoefficient($product->unit),
+                            'unit_coefficient' => $productModule->getSolver()->getUnitCoefficient($product),
                             'prices' => $productModule->getPriceArray($product, $userProducer->user, $pointSale),
                             'wording_unit' => $product->wording_unit,
                             'tax_rate' => $product->taxRate->value

common/forms/SubscriptionForm.php

                     $newProductSubscription = new ProductSubscription;
                     $newProductSubscription->id_subscription = $subscription->id;
                     $newProductSubscription->id_product = $idProduct;
-                    $newProductSubscription->quantity = $quantity /  $productModule->getSolver()->getUnitCoefficient($product->unit);
+                    $newProductSubscription->quantity = $quantity /  $productModule->getSolver()->getUnitCoefficient($product);
 
                     $newProductSubscription->save();
                 }

producer/controllers/SubscriptionController.php

         $indexProduct = 0;
         foreach ($productsArray as &$product) {
             $quantity = 0;
-            $coefficientUnit = $productModule->getSolver()->getUnitCoefficient($product->unit);
+            $coefficientUnit = $productModule->getSolver()->getUnitCoefficient($product);
             if (isset($arrayProductsSubscription) && count($arrayProductsSubscription)) {
                 foreach ($arrayProductsSubscription as $productSubscription) {
                     if ($product->id == $productSubscription->id_product) {
-                        $coefficientUnit = $productModule->getSolver()->getUnitCoefficient($productSubscription->product->unit);
+                        $coefficientUnit = $productModule->getSolver()->getUnitCoefficient($productSubscription->product);
                         $quantity = $productSubscription->quantity * $coefficientUnit;
                     }
                 }