Getting an error in Project.OpenAsync([..]) while to project is a valid 2.8.0 *.aprx file System.AggregateException: 'One or more errors occurred.' Inner Exception NullReferenceException: Object reference not set to an instance of an object. Stack Trace: at ArcGIS.Desktop.Core.CoreModule.d__40.MoveNext()
Same exact issue. Frustrating that they don't supply a separate sample project so I can just review the code. If I find a solution, I'll leave another comment on this video
