JavaScript blocked due to MIME type mismatch
If the server has the security option "X-Content-Type-Options: nosniff" set, then JavaScript lib is not loaded.
The resource from “http://example.com/lib/functions.js.php”
was blocked due to MIME type mismatch (X-Content-Type-Options: nosniff).
Reason: The resource is a PHP file, and therefore has the mime type of PHP. But it is supposed to be a JavaScript, and therefore should be delivered with a "text/javascript" MIME type.