PhpStorm warning on HTML comment

Question

PHP 8.0
PhpStorm 2021.2
Runtime version: 11.0.11+9-b1504.13 amd64
Windows 10

I am receiving warnings "Selector matches unknown element suppress" and "Selector matches unknown element JSUnresolvedLibraryURL" in PhpStorm for the following:

<!doctype html>
<html lang="en">

<head>
    <meta charset="utf-8">
    <title><?=$title?></title>
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
    <meta name="Description" content="Real Estate for sale <?=$fullAddress?>. MLS <?=$MLS?>">
    <!--suppress JSUnresolvedLibraryURL -->
    <script src='https://api.mapbox.com/mapbox-gl-js/v1.12.0/mapbox-gl.js'></script>
</head>

It runs without error, but I would like to understand the why behind the warning and resolve it.

lena · Accepted Answer · 2021-10-01 14:42:33Z

1

you must have some language injected in the comments. Please check language injections with IDE and Project scopes in Preferences | Editor | Language Injections.

answered Oct 1, 2021 at 14:42

lena

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