Returning this javascript file with the wrong mime type

Website, Application, Performance Getting Started
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4

Perhaps I mistyped this URL but I get a 403 direct to origin:
curl -Ik https://bigbentortosa.com/contenido/plugins/gravityforms/js/jquery.textareaCounter.plugin.min.js
HTTP/1.1 403 Forbidden
Date: Tue, 11 Sep 2018 18:15:34 GMT
Server: Apache