Einige Schriftartikons, die nicht gezeigt werden
If only some icons seem not to work is very likely you've imported
the wrong version of FontAwesome, try this:
<link
rel="stylesheet"
href="https://use.fontawesome.com/releases/v5.13.0/css/all.css"
integrity="sha384-Bfad6CLCknfcloXFOyFnlgtENryhrpZCe29RTifKEixXQZ38WheV+i/6YWSzkz3V"
crossorigin="anonymous"
/>
MitchAloha