rss feed error

Website: http://www.millerfoodguide.com

Note: I created an inc folder in Customizr Child, in which are the files class-fire-init.php and class-fire-utils_settings_map.php

When I click on the rss subscribe, I get the following error message:

This XML file does not appear to have any style information associated with it. The document tree is shown below.
<rss xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:sy="http://purl.org/rss/1.0/modules/syndication/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" version="2.0">
<channel>
<title/>
<atom:link href="http://www.millerfoodguide.com/feed/" rel="self" type="application/rss+xml"/>
<link>http://www.millerfoodguide.com</link>
<description>
米乐：昆明餐厅的专家，大众评语。 Miller Guide: expert and public reviews of Kunming's restaurants.
</description>
<lastBuildDate>Sat, 06 Jun 2015 07:55:15 +0000</lastBuildDate>
<language>en-US</language>
<sy:updatePeriod>hourly</sy:updatePeriod>
<sy:updateFrequency>1</sy:updateFrequency>
<generator>http://wordpress.org/?v=4.2.2</generator>
</channel>
</rss>