CAS - Redirect to custom login page when credentials are wrong

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CAS - Redirect to custom login page when credentials are wrong

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Good morning.

I've successfully configured a CAS SSO server and client. However, I want to change CAS' configurations to use a custom login page. I followed this tutorial to make such configuration and it works like a charm. But, the problem is that when I enter invalid credentials (wrong username or password) it tries to redirect to the CAS' default login page; however, it should redirect to the custom external login page. I would really appreciate if you help me to find out how to make CAS to redirect to a different page when wrong credentials are entered.

This is my casLoginView.jsp

<%@ page contentType="text/html; charset=UTF-8" %>
       <script type="text/javascript"> function doAutoLogin() { document.forms[0].submit(); } </script>   </head>
   <body onload="doAutoLogin();">
       <form id="credentials" method="POST" action="<a href=";%="><%= request.getParameter("service") %>">
           <input type="hidden" name="lt" value="${loginTicket}" />
           <input type="hidden" name="execution" value="${flowExecutionKey}" />
           <input type="hidden" name="_eventId" value="submit" />
           <input type="hidden" name="username" value="<%= request.getParameter("username") %>" />
           <input type="hidden" name="password" value="<%= request.getParameter("password") %>" />
           <% if ("true".equals(request.getParameter("rememberMe"))) {%>
               <input type="hidden" name="rememberMe" value="true" />
           <% } %>    
           <input type="submit" value="Submit" style="visibility: hidden;" />

And this is my external custom login page:

<form method="GET" action="">
       <p>Username : <input type="text" name="username" /></p>
       <p>Password : <input type="password" name="password" /></p>
       <p>Remember me : <input type="checkbox" name="rememberMe" value="true" /></p>
       <p><input type="submit" value="Login !" /></p>
       <input type="hidden" name="auto" value="true" />
       <input type="hidden" name="service" value="<%= request.getParameter("service") %>" />

Basically my external login page sends the credentials to the CAS login page and the latter is submited automatically. However, when credentials are wrong, CAS redirects to the default login page and not to my external login page.