In Napili Template, article detail page is not opening and instead displays this error message:
The Article Detail page relies on your Salesforce data and because you don't yet have any relevant content, the page can't be displayed. Add some appropriate content and try again.
As per the message make sure you have at least one article and you are able to view that article .
Once you are viewing the article then switch back to the builder lightning page editor .
Follow the below steps
1.Make sure your profile has access to the article type
2.Make sure the Topic is enabled for article type
3.Publish an article by allowing necessary channels and data category
4.Assign Topic to Knowledge article via Article management Tab
5.View the article using branding editor menu
6.Switch back to the editor
