title: Upgrade to Grails 2.4.4 : /index.gsp not found
body: <p>In Grails 1.0.3 version shows the list of controllers, when the url is placed in the browser. But currently its giving /index.gsp not found.
  class UrlMappings {</p>
  
  <pre><code>    static mappings = {
          "/$controller/$action?/$id?(.$format)?"{
              constraints {
                  // apply constraints here
              }
          }
          "/"(view:"/index")
          "500"(view:'/error')
  }
  </code></pre>
  
  <p>This is my urlMappings.groovy. Please give me the solution to avoid this problem.</p>