title: <p:lineChart> Tag Library supports namespace: http://primefaces.org/ui, but no tag was defined for name: lineChart
body: <p>i want to create a linechart using primefaces 5.1. but i got error message "<strong><em> Tag Library supports namespace: <a href="http://primefaces.org/ui" rel="nofollow">http://primefaces.org/ui</a>, but no tag was defined for name: lineChart</em></strong> " when loading my xhtml page. this is my code</p>
  
  <h2>sample.xhtml</h2>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
  &lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt;
  &lt;html xmlns="http://www.w3.org/1999/xhtml"
  xmlns:h="http://java.sun.com/jsf/html"
  xmlns:f="http://java.sun.com/jsf/core"
  xmlns:ui="http://java.sun.com/jsf/facelets"
  xmlns:p="http://primefaces.org/ui"&gt;
  
  &lt;h:head&gt;
  &lt;/h:head&gt;
  &lt;h:body&gt;
  &lt;h:form&gt;
  
   &lt;p&gt;LineChart is created By Manaf.&lt;/p&gt;
      &lt;p:lineChart id="linear" value="#{chartBean.linearModel}" legendPosition="e"          title="Linear Chart" minY="0" maxY="10" style="height:300px;"/&gt;
      &lt;p:lineChart id="category" value="#{chartBean.categoryModel}" legendPosition="e"title="Category Chart" minY="0" maxY="200" tyle="height:300px;margin-top:20px"/&gt;
  
  &lt;/h:form&gt;
  &lt;/h:body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>...  what is the actual problem, iam a beginner in primefaces and jsf...</p>