[SmartCrawl Pro] Smartcrawl Sitemap

I have a subsite (https://www.reachsociety.com) in the above multi-site setup. I am configuring the Sitemap, however when I visit the generated sitemap I get the error (see picture)

When i view the source the xml tag in on line 2 with a blank line on line 1. There appears to be some additional spacing output when in multisite mode, causing this error.