title: Cannot load sidepanel.jelly in Jenkins plugin
body: <p>Im getting the next error when I try to load "sidepanel.jelly" in my Jenkins plugin action jelly file. </p>
  
  <p><code>
  javax.servlet.ServletException: org.apache.commons.jelly.JellyTagException: file:/C:/Documents%20and%20Settings/Tecnoy/Escritorio/vats_eclipse/src/main/resources/org/jenkinsci/plugins/vats/VatsBuildAction/index.jelly:4:42: &lt;st:include&gt; No page found 'sidepanel.jelly' for class org.jenkinsci.plugins.vats.VatsBuildAction
      at org.kohsuke.stapler.jelly.JellyClassTearOff.serveIndexJelly(JellyClassTearOff.java:117)
      at org.kohsuke.stapler.jelly.JellyFacet.handleIndexRequest(JellyFacet.java:127)
      at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:717)
      at org.kohsuke.stapler.Stapler.invoke(Stapler.java:858)
      at org.kohsuke.stapler.MetaClass$12.dispatch(MetaClass.java:390)
  ...
  Caused by: org.apache.commons.jelly.JellyTagException: file:/C:/Documents%20and%20Settings/Tecnoy/Escritorio/vats_eclipse/src/main/resources/org/jenkinsci/plugins/vats/VatsBuildAction/index.jelly:4:42: &lt;st:include&gt; No page found 'sidepanel.jelly' for class org.jenkinsci.plugins.vats.VatsBuildAction
      at org.kohsuke.stapler.jelly.IncludeTag.doTag(IncludeTag.java:124)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)
  ...
  </code></p>
  
  <p>My jelly file has the following lines</p>
  
  <p><code>
  &lt;?jelly escape-by-default='true'?&gt;
  &lt;j:jelly xmlns:j="jelly:core" xmlns:st="jelly:stapler" xmlns:l="/lib/layout" xmlns:t="/lib/hudson"&gt;
      &lt;l:layout norefresh="true"&gt;
      &lt;st:include page="sidepanel.jelly" /&gt;
      &lt;l:main-panel&gt;
          &lt;h1&gt;Vats Summary:&lt;/h1&gt;
          &lt;div id="canvas-holder"&gt;
              &lt;p&gt;&lt;canvas id="chart-area" width="300" height="300"/&gt;&lt;/p&gt;
          &lt;/div&gt;
      &lt;script type="text/javascript" src="${resURL}/plugin/vats/scripts/chart.min.js"&gt;&lt;/script&gt;
      &lt;script type="text/javascript"&gt;
  ...
      &lt;/script&gt;
          &lt;canvas id="myChart" width="400" height="400"&gt;&lt;/canvas&gt;
      &lt;/l:main-panel&gt;
    &lt;/l:layout&gt;
  &lt;/j:jelly&gt;
  </code></p>
  
  <p>Any idea how can I fix it?</p>
  
  <p>Thanks!</p>