title: java.lang.IllegalArgumentException: No bean specified
body: <p>I am getting this error when I try to submit form. 
  Form has two field one is empty and another has some value.</p>
  
  <pre><code>java.lang.IllegalArgumentException: No bean specified
  org.apache.commons.beanutils.PropertyUtilsBean.getPropertyDescriptor(PropertyUtilsBean.java:883)
  org.apache.commons.beanutils.BeanUtilsBean.setProperty(BeanUtilsBean.java:935)
  org.apache.commons.beanutils.BeanUtilsBean.populate(BeanUtilsBean.java:830)
  org.apache.commons.beanutils.BeanUtils.populate(BeanUtils.java:433)
  org.apache.struts.util.RequestUtils.populate(RequestUtils.java:493)
  org.apache.struts.action.RequestProcessor.processPopulate(RequestProcessor.java:805)
  org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:203)
  org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
  org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
  javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
  javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
  org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1063)
  org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:386)
  org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:229)
  org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
  org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
  javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
  javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
  org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1063)
  org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:386)
  org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:229)
  org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
  org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
  javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
  javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
  </code></pre>