Magento 2 Argument 1 passed getProductFromLocalCache() must be of the type string, null given, called

Question

After migration Magento 1 to 2.3.4, I have facing an error on some product edit.

Argument 1 passed to Magento\Catalog\Model\ProductRepository::getProductFromLocalCache() must be of the type string, null given, called in /srv/public_html/vendor/magento/module-catalog/Model/ProductRepository.php on line 270

Can you please help me to resolve this error ?

Thank you

Answer 1

For affected product has no SKU. Add SKU for that product this error will be fixed. You can update directly from MySQL, the table name is: catalog_product_entity

Answer 2

There is some blank SKU save into admin section so you need to change status for that.

UPDATE **prefix_**catalog_product_entity SET sku='' WHERE sku IS NULL;

Just run above query using you prefix if you have than check you admin section working properly.