I am receiving an error when I try to build an Add-in solution using the ArcGIS Pro SDK. I have set the target framework for .NET 4.8 and I have ArcGIS Pro 2.8 installed. The error is as follows:
The tag 'DesignOnlyResourceDictionary' does not exist in XML namespace 'clr-namespace:Esri.ArcGISPro.Extensions;assembly=Esri.ArcGISPro.Extensions'.
The error is occurring on my .XAML file.
Has anyone else run into this issue?