title: Change vue router route without changing the URL
body: <p>In my frontend I want to redirect the user to an error view in case the initialization went wrong. For this purpose I've prepare a special error view that could be called via a specific route. To improve UX I don't want to replace the url with something like <code>/error</code>, but I still want to take advantage of the vue router. </p>
  
  <p>Do you have any idea how to achieve this?</p>