XML Stop working after latest plugin update

After latest update of plugin when i try to access my sitemaps i get this

XML Parsing Error: XML or text declaration not at start of entity
Location: http://www.*****.com/sitemap_index.xml
Line Number 2, Column 1:<?xml version=”1.0″ encoding=”UTF-8″?><?xml-stylesheet type=”text/xsl” href=”http://www.*******.com/main-sitemap.xsl&#8221;?>
^

https://wordpress.org/plugins/wordpress-seo/