The web app manifest is a simple JSON file that tells the browser about your web application and how it should behave when ‘installed’ on the user’s mobile device or desktop, such as when the user adds the website to their iPhone or Android home screen. I know that the manifest file should be added to the HTML tag like the following example:
<link rel="manifest" href="/favicons/manifest.json>
My question is what if the link mentioned is a 404 link? What is the impact of that on the website SEO?