"named entity expected. Got none" error bei Einbindung von GoogleFont

"named entity expected. Got none" error

That's because there is an '&' symbol inside a link or src. HTML don't read entities like ampersand symbols. You should use %26 as an ampersand instead.

<link href="https://fonts.googleapis.com/css?family=Julee%26display=swap" rel="stylesheet" type="text/css">

URL-Maskierung

HTML URL Encoding Reference