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>Request has expired</Message>
<X-Amz-Expires>300</X-Amz-Expires>
<Expires>2020-10-19T13:56:47Z</Expires>
<ServerTime>2020-10-19T14:01:58Z</ServerTime>
<RequestId>FW4S1N5Y0GEG6K7P</RequestId>
<HostId>gP+/ipVibEiNpQl6ke07kGaHsH9I8I6C4/sGxoYy9Juw1oCnoFSGHyEif+mbA/N02vbEVDA+v8Y=</HostId>
</Error>Answer

The XML Display is a Security Feature:

The links generated for viewing file uploads through Vitality have a security policy in place to time out after 15 minutes. 

How To Fix This:

Step 1:  Refresh the Tenant Account Page
Step 2:  Re-open the file using the link on the page.  This will reset this timer and let you view the document. 

Note:  Refreshing an existing link without refreshing the Tenant Account Page will continue to display this error.