Stream app not working on any of my LG televisions

Hello, 

   I am having an issue with all (four) of my LG televisions inside of my home now using the xfinity stream app.  They all worked fine yersterday and today, I am getting the same error message(Error Code: -105) on all of them "Check Network Connection  The requested address cannot be found. Please check the network connection status.  Hostname: cdn.stream-flex-active.top.comcast.net"  I have already reset my home netword multiple times and this has not solved the issue.  My mobile devices are working just fine, but none of the televisions are working.  So you are aware, all of the televisions are wired to my home network via cat6 to my Unifi Ubiquiti UDM pro router and 40 port poe switch and my internet services are working just fine.  This is not an issue with my home network.