Basic property setting of TextBox Value not binding

Please remind me where the Radzen's log file location (MacOS)

Binding to the disabled property of the text box does not cause errors.
An error occurs when binding to this property in dropdown, which has a value property attached

Message from output during complie:
dotnet: obj/Debug/netcoreapp3.1/Razor/Pages/Dialog.razor.g.cs(142,235): error CS1977: Cannot use a lambda expression as an argument to a dynamically dispatched operation without first casting it to a delegate or expression tree type. [/Users/domivan/Documents/Radzen/Test/server/Test.csproj]