title: Why POM.xml default template has an error? cvc-elt.1.a: Cannot find the declaration of element 'project'
body: <p>today I had fight with theoretically simple Maven. I did everything like in tutorial, but I had an issue:
  cvc-elt.1.a: Cannot find the declaration of element 'project'.
  <a href="https://i.stack.imgur.com/WIrgX.png" rel="nofollow noreferrer">Link to see template error</a></p>
  <p>I had no idea why is it not working so I tried to do it way around. I created normal java project,
  then converted it into Maven project and thanks to this I received pom.xml file which works.</p>
  <p>I wanna share it with you and maybe somebody will take some conclusions. I am totally new in java and I have error for the second time which does not come, because of my mistake - I hope.</p>
  <p>Here you can see notpad comparation: <a href="https://i.stack.imgur.com/RqWyP.png" rel="nofollow noreferrer">difference in declaration</a></p>
  <p>Not working declaration:</p>
  <pre><code>&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;
  </code></pre>
  <p>And here corrected one by adding &quot;s&quot; to &quot;http&quot;:</p>
  <pre><code>&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 https://maven.apache.org/xsd/maven-4.0.0.xsd&quot;&gt;
  </code></pre>
  <p>That &quot;s&quot; can be added to any &quot;http&quot; to exists at least once.</p>