优化bug

app/code/Magento/Catalog/Block/Product/ProductList/Upsell.php

@@ -131,9 +131,8 @@ class Upsell extends AbstractProduct implements IdentityInterface
         if (!count($this->_itemCollection->getItems())){
         if (!count($this->_itemCollection->getItems())){
             $collection = $this->_collectionFactory->create();
             $collection = $this->_collectionFactory->create();
             $collection->addAttributeToSelect('*');
             $collection->addAttributeToSelect('*');
-            $collection->addCategoriesFilter(['in' => $product->getCategoryIds()]);
             $collection->setVisibility($this->_catalogProductVisibility->getVisibleInCatalogIds());
             $collection->setVisibility($this->_catalogProductVisibility->getVisibleInCatalogIds());
-            $collection->getSelect()->order('id');
+            $collection->getSelect()->order('rand()');
             $collection->setPageSize(10);
             $collection->setPageSize(10);
             $collection->addStoreFilter($product->getStoreId());
             $collection->addStoreFilter($product->getStoreId());
             $this->_itemCollection =  $collection;
             $this->_itemCollection =  $collection;