RSS does not validate properly I am trying to generate an RSS feed, but it does not validate. I googled around and found RSS Feed does not validate using Views RSS module, but unfortunately it's for Drupal 7, while I am using Drupal 8.4.4. 

What a similar method for Drupal 8 would be? The XML I get has an empty line before &lt;?xml version="1.0" encoding="utf-8"?&gt;, which I believe it's the main problem.

&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;rss version="2.0" xml:base="https://example.com/feeds.xml" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:og="http://ogp.me/ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:schema="http://schema.org/" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#"&gt;
    &lt;channel&gt;
      &lt;title&gt;Title&lt;/title&gt;
      &lt;link&gt;https://example.com/feeds.xml&lt;/link&gt;
      &lt;language&gt;en&lt;/language&gt;

      &lt;item&gt;
        &lt;title&gt;UAE Lenders Upbeat as Growth Prospects Surge&lt;/title&gt;
        &lt;link&gt;https://halaltimes.com/uae-lenders-upbeat-growth-prospects-surge&lt;/link&gt;
        &lt;description&gt;  &amp;lt;img src=&amp;quot;/sites/default/files/styles/large/public/Article/growth-prospects-surge-in-uae.jpg?itok=VEwWB-9R&amp;quot; width=&amp;quot;480&amp;quot; height=&amp;quot;320&amp;quot; alt=&amp;quot;&amp;quot; typeof=&amp;quot;Image&amp;quot; class=&amp;quot;image-style-large&amp;quot; /&amp;gt;
Do you have a template for views-view-rss.html.twig in your theme folder? 
Try enabling the Twig debug feature if you are not sure. 

The default one in core/modules/views/templates works properly (same core version).