title: Using vaadin add-on "EasyUpload" - compile widgetset with maven
body: <p>I'm new of vaadin and this is the first time that I try to use an add-on <a href="https://i.stack.imgur.com/gDI59.png" rel="nofollow noreferrer">EasyUpload add-on</a>  </p>
  
  <p>I'm using maven to build my project, and i modified my pom.xml in ths way:</p>
  
  <pre><code>&lt;project&gt;
    &lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt;
    &lt;artifactId&gt;My-vaadin-webapp&lt;/artifactId&gt;
    &lt;packaging&gt;war&lt;/packaging&gt;
  
  &lt;!-- Add-On Repository --&gt;
  &lt;repositories&gt;
      &lt;repository&gt;
          &lt;id&gt;vaadin-addons&lt;/id&gt;
          &lt;url&gt;http://maven.vaadin.com/vaadin-addons&lt;/url&gt;
      &lt;/repository&gt;
  &lt;/repositories&gt;
  
  
  &lt;dependencies&gt;
      &lt;dependency&gt;
          &lt;groupId&gt;org.vaadin.addon&lt;/groupId&gt;
          &lt;artifactId&gt;easyuploads&lt;/artifactId&gt;
          &lt;version&gt;7.0.1&lt;/version&gt;
      &lt;/dependency&gt;   
  &lt;/dependencies&gt;
  
  &lt;/project&gt;
  </code></pre>
  
  <p>But when to try </p>
  
  <blockquote>
    <p>MultiFileUpload</p>
  </blockquote>
  
  <p>i get the following result:</p>
  
  <p><img src="https://i.stack.imgur.com/gDI59.png" alt="enter image description here"></p>
  
  <p>I read the I should compile my widget-set, but I don't use a custom widget-set, I'm using a default widget-Set.</p>
  
  <p>This is my web.xml:</p>
  
  <pre><code>    &lt;?xml version="1.0" encoding="UTF-8"?&gt;
  &lt;web-app&gt;
      &lt;display-name&gt;MyApp&lt;/display-name&gt;
  
  
  
      &lt;listener&gt;
          &lt;listener-class&gt;org.springframework.web.context.ContextLoaderListener&lt;/listener-class&gt;
      &lt;/listener&gt;
  
      &lt;listener&gt;
          &lt;listener-class&gt;org.springframework.web.util.Log4jConfigListener&lt;/listener-class&gt;
      &lt;/listener&gt;
  
      &lt;listener&gt;
        &lt;listener-class&gt;org.springframework.web.context.request.RequestContextListener&lt;/listener-class&gt;
      &lt;/listener&gt;
  
      &lt;session-config&gt;
          &lt;session-timeout&gt;30&lt;/session-timeout&gt;
      &lt;/session-config&gt;
  
      &lt;servlet&gt;
          &lt;servlet-name&gt;MyServlet&lt;/servlet-name&gt;
          &lt;servlet-class&gt;com.myApplication.AutowiringApplicationServlet&lt;/servlet-class&gt;
          &lt;init-param&gt;
              &lt;description&gt;Vaadin UI class to use&lt;/description&gt;
              &lt;param-name&gt;UI&lt;/param-name&gt;
              &lt;param-value&gt;com.myApplication.Application&lt;/param-value&gt;
          &lt;/init-param&gt;   
  
      &lt;/servlet&gt;
  
  
      &lt;servlet-mapping&gt;
          &lt;servlet-name&gt;VaadinApplication&lt;/servlet-name&gt;
          &lt;url-pattern&gt;/*&lt;/url-pattern&gt;
      &lt;/servlet-mapping&gt;
  
  &lt;/web-app&gt;
  </code></pre>
  
  <p>Where am I doing wrong?
  How to can I do to solve my problem?</p>