FIx conflict between Bss_XML Sitemap with module Nginx page speed

Issue: 

Google Sitemap generating but when I open the link its blank.

when I open it in Firefox then getting the below error:

Error loading stylesheet: Parsing an XSLT stylesheet failed.

But, Default Magento sitemap working perfectly. below is the default Magento sitemap

Solution:

The style issue with the file XML site map happens when enabling Nginx page speed module.

The module Nginx page speed adds some tags on the page xmlsitemap/index/style, so it breaks style of our module.

To fix this conflict, we would like to give the hot-fix as follows:

Step 1: Edit this file app/code/Bss/XmlSiteMap/Model/Sitemap.php

Step 2: add file /var/www/codearrow/pub/style-sitemap.xsl (the attachment file)

Step 3: Flush the cache.

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