I have created a simple app that has a few pages in it and nothing else. When I switch between the pages I get "Expected a valid shop query parameter" in the page body instead of the actual content.
Any idea what maybe causing this?
Requests sent by Shopify will have a shop parameter attached. if the requests are not sent by Shopify, the parameter is not available. The docs do include this information.
I think you should post the thread to API or another developer-related board. This board is not that related.
I am getting this error as part of creating app using the shopify app cli and following this for adding navigation in embedded app https://shopify.dev/tutorials/create-a-navigation-link-with-app-extensions?locale=en