Why this error Occurs?
This error appears when the article schema is not added to the categories and to resolve this you need to add the article schema type to all your categories and for that, you need to follow this tutorial.
That’s it for this tutorial!
We hope it helped you. If you have any feedback or questions or do you want us to create compatibility for any other schema type which isn’t listed in our plugin then you can request us we will surely implement it as soon as possible.
Just contact us here and we are always available for you.