'What does "This XML file does not appear to have any style information". mean? [closed]

I know very little of xml, almost nothing and now I've to deal with a website which allows me to upload any kind of file, but when I visit the link that points to that file I see this message

This XML file does not appear to have any style information associated with it. The document tree is shown below.

<Error>
<Code>AccessDenied</Code>
<Message>Access Denied</Message>
<RequestId>56D9E6D5AB81C7F8</RequestId>
<HostId>
bbhO3UnotoXA8qS8aMbKHhPdjGIwegs6dfX5cPJ7yZS7hRaDTuacjPhaPY4WH/vYXuOBfgCm23o=
</HostId>
</Error>

This means that the server is proposing content as xml but if I upload an xml file, the server will give me the same message. But actually what I don't understand is what's that "AccessDenied"... I don't know where I can start to understand considering that I don't have access to that server. Now I would like to know what is happening exactly, what's the logic behind all this?



Solution 1:[1]

I faced this very error when trying to access a file from AWS's S3 bucket. Turns out, I just had to make that file public. (Though keep in mind, making a file public comes with obvious security risks)

Solution 2:[2]

You will get this error in the client side when the client (the webbrowser) for some reason interprets the HTTP response content as text/xml instead of text/html and the parsed XML tree doesn't have any XML-stylesheet.

Opening Facelets page errors with "This XML file does not appear to have any style information associated with it."

Sources

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Source: Stack Overflow

Solution Source
Solution 1
Solution 2 Community