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https://nishantrana.me/2013/01/27/http-error-404-3-not-foundthe-page-you-are-requesting-cannot-be-served-because-of-the-extension-configuration-if-the-page-is-a-script-add-a-handler-if-the-file-should-be-downloaded-add-a-mime-ma/
HTTP Error 404.3 - Not FoundThe page you are requesting cannot be served because of the extension configuration. If the page is a script, add a handler. If the file should be downloaded, add a MIME map