title: Malformed POM: Unrecognised tag
body: <p>I was trying to work on this project for school and needed to use MultiMaps from Apache.commons. I edited my <code>pom.xml</code> file to add that dependency and could use the <em>import</em> command in my IDE. But when I try to run it I get an error, it has something to do with my <code>pom.xml</code> file but I don't see any issues with it.</p>
  <pre><code>&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;
  &lt;project xmlns=&quot;http://maven.apache.org/POM/4.0.0&quot; xmlns:xsi=&quot;http://www.w3.org/2001/XMLSchema-instance&quot;
           xsi:schemaLocation=&quot;http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd&quot;&gt;
      &lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt;
      &lt;groupId&gt;ClassStuff&lt;/groupId&gt;
      &lt;artifactId&gt;Scheduler&lt;/artifactId&gt;
      &lt;version&gt;1.0&lt;/version&gt;
      &lt;packaging&gt;jar&lt;/packaging&gt;
      &lt;properties&gt;
          &lt;project.build.sourceEncoding&gt;UTF-8&lt;/project.build.sourceEncoding&gt;
          &lt;maven.compiler.source&gt;11&lt;/maven.compiler.source&gt;
          &lt;maven.compiler.target&gt;11&lt;/maven.compiler.target&gt;
      &lt;/properties&gt;
      &lt;dependency&gt;
          &lt;groupId&gt;org.apache.commons&lt;/groupId&gt;
          &lt;artifactId&gt;commons-collections4&lt;/artifactId&gt;
          &lt;version&gt;4.2&lt;/version&gt;
      &lt;/dependency&gt;
      &lt;dependency&gt;
          &lt;groupId&gt;commons-collections&lt;/groupId&gt;
          &lt;artifactId&gt;commons-collections&lt;/artifactId&gt;
          &lt;version&gt;3.2.2&lt;/version&gt;
      &lt;/dependency&gt;
  &lt;/project&gt;
  </code></pre>