In one of your page components you added a `getInitialProps` that returned an empty object. This de-optimizes automatic static optimization. If you **meant** to do this and understand the **consequences** you can ignore this message as it is only shown in development.
Look for any page's using `getInitialProps` that return an empty object `{}`. You might also need to update higher order components (HOCs) to only add `getInitialProps` if they are present on the passed component.
