I was not able to download and upload the web font on my website server myself, and other articles by Stack on this topic did not help me find an error here.
I get an empty place where fonts should appear.
Here are the details:
https://www.foo.com/public_html/wp-content/themes/independent-publisher/fonts/fontawesome-free-5-0-6/web-fonts-with-css/
this is the location of my CSS font file, fontawesome-all.css

https://www.foo.com/public_html/wp-content/themes/independent-publisher/fonts/fontawesome-free-5-0-6/web-fonts-with-css/webfonts
this is the location of my font

Firstly, make sure that I do not pass path related errors in my link in my stylesheet.
I tried to reference the font CSS stylesheet in my HTML headers in several ways:
As a relative link:
<link href="./fonts/fontawesome-free-5-0-6/web-fonts-with-css/fontawesome-all.css" rel="stylesheet">
As an absolute link:
<link href="https://www.foo.com/public_html/wp-content/themes/independent-publisher/fonts/fontawesome-free-5-0-6/web-fonts-with-css/fontawesome-all.css" rel="stylesheet">
Secondly, make sure my @ font-face implementation and pointers to them are correct. Inside the font style sheet fontawesome-all.cssthere is @font-facea font call:
@font-face {
font-family: 'Font Awesome 5 Brands';
font-style: normal;
font-weight: normal;
src: url("../webfonts/fa-brands-400.eot");
src: url("../webfonts/fa-brands-400.eot?#iefix") format("embedded-opentype"), url("../webfonts/fa-brands-400.woff2") format("woff2"), url("../webfonts/fa-brands-400.woff") format("woff"), url("../webfonts/fa-brands-400.ttf") format("truetype"), url("../webfonts/fa-brands-400.svg#fontawesome") format("svg"); }
.fab {
font-family: 'Font Awesome 5 Brands'; }
@font-face {
font-family: 'Font Awesome 5 Free';
font-style: normal;
font-weight: 400;
src: url("../webfonts/fa-regular-400.eot");
src: url("../webfonts/fa-regular-400.eot?#iefix") format("embedded-opentype"), url("../webfonts/fa-regular-400.woff2") format("woff2"), url("../webfonts/fa-regular-400.woff") format("woff"), url("../webfonts/fa-regular-400.ttf") format("truetype"), url("../webfonts/fa-regular-400.svg#fontawesome") format("svg"); }
.far {
font-family: 'Font Awesome 5 Free';
font-weight: 400; }
@font-face {
font-family: 'Font Awesome 5 Free';
font-style: normal;
font-weight: 900;
src: url("../webfonts/fa-solid-900.eot");
src: url("../webfonts/fa-solid-900.eot?#iefix") format("embedded-opentype"), url("../webfonts/fa-solid-900.woff2") format("woff2"), url("../webfonts/fa-solid-900.woff") format("woff"), url("../webfonts/fa-solid-900.ttf") format("truetype"), url("../webfonts/fa-solid-900.svg#fontawesome") format("svg"); }
.fa,
.fas {
font-family: 'Font Awesome 5 Free';
font-weight: 900; }
: HTML, (), , : <i class="fas fa-external-link-alt"></i>, :
.rss-subscribe:before{
font-family: 'Font Awesome 5 Free';
font-size: 20pt;
content: "\f09e";
margin-right: 10px;
float: left;
width: 32px;
}
2: CSS , <link href="https://www.ashenglowgaming.com/public_html/wp-content/themes/independent-publisher/fonts/fontawesome-free-5-0-6/web-fonts-with-css/fontawesome-all.css" rel="stylesheet"> , , <i class="fas fa-external-link-alt"></i>,
.rss-subscribe:before{
font-family: 'Font Awesome 5 Free';
font-size: 20pt;
content: "\f09e";
margin-right: 10px;
float: left;
width: 32px;
}
, , .
, : Awesome