Google Nest Community

I'm using 3rg Gen & NEW Chromecast DEVICE with google TV. It installs successfully but just at he end it displays message " google Chromecast need to be allowed network access to cast on this network)". Then when I'm using Home app it displays messag...

My Chromecast keep asking for permission to access network information to Cast on Android devices۔ My phone and Chromecast are on same WiFi and still I can't see cast on Home App. Do I need to change some settings on router?