Hi, from validator.w3:
Sorry
This feed does not validate.
line 1, column 1: Blank line before XML declaration [help]
^
In addition, interoperability with the widest range of feed readers could be improved by implementing the following recommendations.
line 45, column 0: content:encoded should not contain data-elementor-type attribute (10 occurrences) [help]
<content:encoded><![CDATA[ <div data-elementor-type=”post” data-ele …
line 45, column 0: content:encoded should not contain data-elementor-id attribute (10 occurrences) [help]
<content:encoded><![CDATA[ <div data-elementor-type=”post” data-ele …
line 45, column 0: content:encoded should not contain data-elementor-settings attribute (10 occurrences) [help]
<content:encoded><![CDATA[ <div data-elementor-type=”post” data-ele …
line 48, column 0: content:encoded should not contain data-id attribute (384 occurrences) [help]
<section class=”has_eae_slider elementor-element elementor-element-67 …
line 48, column 0: content:encoded should not contain data-element_type attribute (375 occurrences) [help]
<section class=”has_eae_slider elementor-element elementor-element-67 …
line 48, column 0: content:encoded should not contain data-settings attribute (43 occurrences) [help]
<section class=”has_eae_slider elementor-element elementor-element-67 …
line 54, column 0: content:encoded should not contain data-widget_type attribute (137 occurrences) [help]
<div class=”elementor-element elementor-element-4f7de39e elementor-widge …
line 57, column 0: content:encoded should not contain data-elementor-open-lightbox attribute (9 occurrences) [help]
<a href=”https://www.ntkbelakrajina.si/wp-content/uploads/2019/03/ …
line 58, column 0: content:encoded should not contain sizes attribute (9 occurrences) [help]
<img width=”1000″ height=”658″ src=”https://www.ntkbelakrajina.si/wp-c …
line 95, column 0: content:encoded should not contain data-tab_trigger_type attribute (9 occurrences) [help]
<div class=”elementor-shortcode”><div class=”everest-tab-main-wrapper e …
line 99, column 0: content:encoded should not contain data-tabtype attribute (37 occurrences) [help]
<a href=”javascript:void(0);” data-tabtype=”component_t …
line 141, column 0: content:encoded should not contain data-active attribute (37 occurrences) [help]
<div class=”etab-content-section etab-250129689 etab-active-content e …
line 168, column 0: content:encoded should not contain style tag (9 occurrences) [help]
<style>
line 288, column 0: content:encoded should not contain role attribute (8 occurrences) [help]
<a href=”https://www.ntkbelakrajina.si/bntl-2018-19/” class=”elementor-but …
line 2842, column 0: content:encoded should not contain iframe tag (4 occurrences) [help]
<iframe class=”elementor-video-iframe”
I will also check with other theme…
Best regards