We have been working with xamarin.forms 2.5 for many years but recently we decided to upgrade xamarin.forms in to 4.6 (latest version) and converted portable library in to .net core (.net Standard 2.1)
right now we have all the latest versions including visual studio (2019 16.5.4).
We are no trying convert our custom made tools in to xamarin.forms tools such as ImageButton, Checkbox and Radio Button
ImageButton so far successful with conversion but when we tried to use Xamarin.Forms checkbox this issue occurs while loading the page
and error also doesn't say much to resolve
Do you have any suggestion we should do here?