Ttdfjt

I added sample data to my magento2 website, but when I want to access to a product I always get this error :

Fatal error: Uncaught Error: Call to a member function getId() on null
in
/var/www/html/test/vendor/magento/module-catalog/Helper/Product.php:313
Stack trace: #0
/var/www/html/test/vendor/magento/module-catalog/Helper/Product.php(430):
MagentoCatalogHelperProduct->canShow(NULL) #1
/var/www/html/test/vendor/magento/module-catalog/Helper/Product/View.php(263):
MagentoCatalogHelperProduct->initProduct(1562,
Object(MagentoCatalogControllerProductViewInterceptor),
Object(MagentoFrameworkDataObject)) #2
/var/www/html/test/vendor/magento/module-catalog/Controller/Product/View.php(118):
MagentoCatalogHelperProductView->prepareAndRender(Object(MagentoFrameworkViewResultPageInterceptor),
1562, Object(MagentoCatalogControllerProductViewInterceptor),
Object(MagentoFrameworkDataObject)) #3
/var/www/html/test/vendor/magento/framework/App/Action/Action.php(108):
MagentoCatalogControllerProductView->execute() #4
/var/www/html/test/vendor/magento/framework/Interception/Interceptor.php(58):
MagentoFramewor in
/var/www/html/test/vendor/magento/module-catalog/Helper/Product.php on
line 313

The Product.php code :

public function canShow($product, $where = 'catalog')
 
 if (is_int($product)) 
 try 
 $product = $this->productRepository->getById($product);
 catch (NoSuchEntityException $e) 
 return false;
 
 else 
 /*313*/ if (!$product->getId()) 
 return false;
 
 
 return $product->isVisibleInCatalog() && $product->isVisibleInSiteVisibility();
 

when I var_dump($product) it's return NULL

Product.php class code : https://snipsave.com/saadsaad/#/snippet/iDIEafixLtWgzWO9sK

is there any solution?

Change your code from if (!$product->getId()) to if (!$product) it should work

complete code would be:

public function canShow($product, $where = 'catalog')

 if (is_int($product)) 
 try 
 $product = $this->productRepository->getById($product);
 catch (NoSuchEntityException $e) 
 return false;
 
 else 
 /*313*/ 
 if (!$product) 
 return false;
 
 
 return $product->isVisibleInCatalog() && $product->isVisibleInSiteVisibility();

Try this one:
null will be returned if the object is null.

public function canShow($product, $where = 'catalog')
 
 if (is_int($product)) 
 try 
 $product = $this->productRepository->getById($product);
 catch (NoSuchEntityException $e) 
 return false;
 
 else 
 return $product ? $product->getId() : null;
 
 return $product->isVisibleInCatalog() && $product->isVisibleInSiteVisibility();
 

After a lot of search, I found that the problem was on di.xml

because I added this:

<preference for="MagentoCatalogApiProductRepositoryInterface" 
 type="TestingHelloWorldModelCustomImplementation" />

so I remove it and it's work