title: redirectToRoute does not load the page but typing does
body: <p>I'm starting with symfony and I can' quite find the right terms to ask the question, so the solution might be really simple or a duplicate, so bear with me.</p>
  
  <p>When I type the URL in the browser like <a href="http://localhost:8000/foo/fooPage/" rel="nofollow noreferrer">http://localhost:8000/foo/fooPage/</a> it works.</p>
  
  <p>But when I try to do this after a form submission:</p>
  
  <pre><code>return $this-&gt;redirectToRoute('/foo/fooPage/');
  </code></pre>
  
  <p>I get this error: Unable to generate a URL for the named route "/foo/fooPage/" as such route does not exist.</p>
  
  <p>So what is the proper way of redirecting?</p>