junit html - 404 not found

 T E S T S
-------------------------------------------------------
Running app.client.local.AppIntegrationTest
INFO [MetaDataScanner] added class scanning extensions: org.jboss.errai.common.metadata.JbossVFsTypeHandler
INFO [Reflections] Reflections took 2184 ms to scan 20 urls, producing 833 keys and 6108 values [using 2 cores]
INFO [NoopClusteringProvider] clustering support not configured.
INFO [OrderedBootstrap] starting errai bus ...
INFO [DefaultComponents] using dispatcher implementation: org.jboss.errai.bus.server.SimpleDispatcher
INFO [DefaultComponents] using session provider implementation: org.jboss.errai.bus.server.HttpSessionProvider
INFO [LoadExtensions] searching for errai extensions ...
INFO [LoadExtensions] found extension org.jboss.errai.tools.monitoring.MonitorExtension
INFO [OrderedBootstrap] errai bus started.
logging for HtmlUnit thread
   [WARN] Obsolete content type encountered: 'application/x-javascript'.
   [WARN] Obsolete content type encountered: 'application/x-javascript'.
[WARN] 404 - GET /app.App.JUnit/hopscotch.css (127.0.0.1) 1392 bytes
INFO [WebClient] statusCode=[404] contentType=[text/html]
INFO [WebClient] <html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"/>
<title>Error 404 NOT_FOUND</title>
</head>
<body><h2>HTTP ERROR 404</h2>
<p>Problem accessing /app.App.JUnit/hopscotch.css. Reason:
<pre>    NOT_FOUND</pre></p><hr /><i><small>Powered by Jetty://</small></i><br/>
<br/>
<br/>
<br/>
  ...
<br/>

</body>
</html>