title: Exception when embedding Web Content in a custom liferay portlet
body: <p>I am embedding web content into a custom portlet deployed to Liferay EE 6.1 GA 1 using:</p>
  
  <pre><code>&lt;liferay-ui:journal-article   articleId="REMEMBER"  groupId="&lt;%=portletGroupId%&gt;" /&gt;
  </code></pre>
  
  <p>This error started showing in the logs and the web content was not there:</p>
  
  <pre><code>java.lang.ClassNotFoundException: org.apache.commons.fileupload.FileItemFactory
      at org.glassfish.web.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1509)
      at org.glassfish.web.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1359)
      at org.apache.jsp.html.taglib.ui.journal_005farticle.page_jsp._jspService(page_jsp.java from :410)
      at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:111)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:770)
      at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:403)
      at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:473)
      at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:377)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:770)
      at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1550)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:72)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:71)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
      at org.apache.catalina.core.ApplicationDispatcher.doInvoke(ApplicationDispatcher.java:807)
      at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:671)
      at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:626)
      at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:556)
      at com.liferay.taglib.util.IncludeTag.include(IncludeTag.java:323)
      at com.liferay.taglib.util.IncludeTag._doInclude(IncludeTag.java:418)
      at com.liferay.taglib.util.IncludeTag.doEndTag(IncludeTag.java:92)
      at org.apache.jsp.WEB_002dINF.jsp.askaquestion.askAQuestion_jsp._jspService(askAQuestion_jsp.java from :309)
      at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:111)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:770)
      at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:403)
      at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:473)
      at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:377)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:770)
      at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1550)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:72)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
  </code></pre>
  
  <p>Any ideas on how to resolve this?</p>