title: java.lang.NoClassDefFoundError: org/apache/taglibs/standard/tag/rt/core/UrlTag
body: <p>After refreshing my Maven project this error appears when i'm opening jsp in Tomcat. What is the cause? </p>
  
  <p>jstl dependencies</p>
  
  <pre><code>&lt;dependency&gt;
  &lt;groupId&gt;javax.servlet&lt;/groupId&gt;
  &lt;artifactId&gt;jstl&lt;/artifactId&gt;
  &lt;version&gt;1.2&lt;/version&gt;
  </code></pre>
  
  <p></p>
  
  <p>This is how I import jstl in jsp</p>
  
  <pre><code> &lt;%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %&gt;  
  </code></pre>