Update Message on Administrators Main Page - Error

I am receiving this error on the main page after I login.

The remote file http://updates.bugzilla.org/bugzilla-update.xml cannot be downloaded (reason: 500 Can't connect to updates.bugzilla.org:80 (No such host is known. )).
Either the remote server is temporarily unavailable, or your web server cannot access the web. If you are behind a proxy, set the proxy_url parameter correctly


When I click the link to go to that site I get the following info:

This XML file does not appear to have any style information associated with it. The document tree is shown below.
<bugzilla>
<branch id="2.20" status="closed" vid="2.20.7" url="https://www.bugzilla.org/releases/2.20.7/" date="2008-11-06"/>
<branch id="2.22" status="closed" vid="2.22.7" url="https://www.bugzilla.org/releases/2.22.7/" date="2009-02-02"/>
<branch id="3.0" status="closed" vid="3.0.11" url="https://www.bugzilla.org/releases/3.0.11/" date="2010-01-31"/>
<branch id="3.2" status="closed" vid="3.2.10" url="https://www.bugzilla.org/releases/3.2.10/" date="2011-01-24"/>
<branch id="3.4" status="closed" vid="3.4.14" url="https://www.bugzilla.org/releases/3.4.14/" date="2012-01-31"/>
<branch id="3.6" status="closed" vid="3.6.13" url="https://www.bugzilla.org/releases/3.6.13/" date="2013-02-19"/>
<branch id="4.0" status="closed" vid="4.0.18" url="https://www.bugzilla.org/releases/4.0.18/" date="2015-04-15"/>
<branch id="4.2" status="closed" vid="4.2.16" url="https://www.bugzilla.org/releases/4.2.16/" date="2015-12-22"/>
<branch id="4.4" status="old-stable" vid="4.4.13" url="https://www.bugzilla.org/releases/4.4.13/" date="2018-02-16"/>
<branch id="5.0" status="stable" vid="5.0.6" url="https://www.bugzilla.org/releases/5.0.6/" date="2019-02-09"/>
</bugzilla>

What is the problem?
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