"downloadable font: rejected by sanitizer " Font Awesome 5 / CSS / HTML / PHP

Question

"downloadable font: rejected by sanitizer (font-family: "Font Awesome 5 Pro" style:normal weight:400 stretch:100 src index:1) source: https://smsverificator.com/assets/fonts/fonts/fa-regular-400.woff2"

Konsola firefoxa wyrzuca powyższy problem.
Nie mogę użyć ikon font awesome 5 na stronie: https://smsverificator.com

Czy ktoś orientuje się jak rozwiązać ten problem z ikonami na guzikach??

  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  <title>Virtual mobile number for free. SMS verification services</title>
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <meta name="description" content="Virtual mobile numbers for text verification">
  <meta name="author" content="CyberService.pl">
  <meta name="keywords" content="temp number, virtual number, virtual mobile number, sms verification number, sms verification services, free registration number, facebook verification number, google verification number, sms verification">
  <meta name="image" content="<?=META['image']?>">
  <meta name="og:image" content="<?=META['image']?>">
  <meta name="og:site_name" content="<?=META['name']?>">
  <meta name="og:type" content="website">
  <meta name="twitter:card" content="summary">
  <meta name="twitter:title" content="<?=META['title']?>">
  <meta name="twitter:description" content="<?=META['description']?>">
  <link href="https://smsverificator.com/assets/css/plugins/bootstrap.min.css" rel="stylesheet">
  <link href="https://smsverificator.com/assets/css/plugins/slick.css" rel="stylesheet">
  <link href="https://smsverificator.com/assets/css/plugins/ion.rangeSlider.min.css" rel="stylesheet">
  <link href="https://smsverificator.com/assets/css/plugins/magnific-popup.css" rel="stylesheet">
  <link href="https://smsverificator.com/assets/css/style.css?v=<?=VERSION?>" rel="stylesheet">
  <link href="https://smsverificator.com/assets/fonts/font-awesome.min.css" rel="stylesheet">
  <link href="https://smsverificator.com/assets/fonts/flaticon/flaticon.css" rel="stylesheet">
  <!-- Favicon-->
  <link rel="apple-touch-icon" sizes="180x180" href="/assets/favicon/apple-touch-icon.png">
  <link rel="icon" type="image/png" sizes="32x32" href="/assets/favicon/favicon-32x32.png">
  <link rel="icon" type="image/png" sizes="16x16" href="/assets/favicon/favicon-16x16.png">
  <link rel="manifest" href="/assets/favicon/site.webmanifest">