"Resource interpreted as script but transferred with MIME type text/html."

Sorry if this is actual duplicate but I haven't managed to find answer for my problem.

I load the script with jQuery's $.getScript. But it causes the following error:

Resource interpreted as script but transferred with MIME type text/html.

The problem appears only in Safari under Mac OS

If to look on headers received from the server, they contain Content-Type:application/x-javascript, so I really don't understand what the problem is.

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