title: Can't add the library firebase to classpath
body: <p>I have followed the Firebase tutorial and I have also checked several times if I have made any mistakes but I can't find it.</p>
  
  <p>The problem is that when I try to add the library to classpath nothing happens. You see in this picture I get the pop-up screen but it remains red after my click and not imports?</p>
  
  <p><a href="https://i.stack.imgur.com/uFmt5.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/uFmt5.png" alt="screenshot: java file"></a></p>