I validated RSS feed of my site raachotrekkers.com/feed through the following site. https://validator.w3.org/feed
I'm getting this message.
Congratulations! [Valid RSS] This is a valid RSS feed.
Recommendations This feed is valid, but interoperability with the widest range of feed readers could be improved by implementing the following recommendations.
line 56, column 0: content:encoded should not contain aria-describedby attribute (377 occurrences) [help]
Notice: JavaScript is required for this content.</noscript><div id="nf-f ...
line 171, column 0: content:encoded should not contain aria-labelledby attribute [help]
Notice: JavaScript is required for this content.</noscript><div id="nf-f ...
line 171, column 0: content:encoded should not contain role attribute [help]
Notice: JavaScript is required for this content.</noscript><div id="nf-f ...
line 177, column 0: content:encoded should not contain script tag (3 occurrences) [help]
<script>var formDisplay=1;var nfForms=nfForms||[];var form=[];form.i ...
line 184, column 0: content:encoded should not contain iframe tag (3 occurrences) [help]
<content:encoded><![CDATA[<p><img data-opt-src="https://mlmgm6ui7ujb ...
line 862, column 0: content:encoded should not contain old-srcset attribute [help]
<content:encoded><![CDATA[<p><img data-opt-src="https://mlmgm6ui7ujb ...
line 882, column 3: content:encoded should not contain relative URL references: ../the-three-passes-trek-blog-audens-col-mayali-pass-patangini-dhar/#attachment_1377 (5 occurrences) [help]
]]> ^ line 1107, column 0: content:encoded should not contain data-hovercard attribute (2 occurrences) [help]
We started t ... line 1107, column 0: content:encoded should not contain data-hovercard-prefer-more-content-show attribute (2 occurrences) [help]
How to fix this issue? Please help out.