Metalama in UWP project

[HakobyanAram]

Hello everyone! I want to use Metalama for the UWP project. I installed the Metalama.Framework 0.5.66-preview version from NuGet.
The Target version in my project is 'Windows 10, version 2004 (10.0; Build 19041) and the Min version is 'Windows 10, version 1809(10.0; Build 17763). After the compilation, I get the following error

Here is the code:

public class LogAttribute : OverrideMethodAspect
    {
       
        public override dynamic? OverrideMethod()
        {
            Debug.WriteLine($"Executing>>>>>>>>>>>>>>>>>>>>>>>>> {meta.Target.Method}.");

            return meta.Proceed();
        }
    }

   public sealed partial class MainPage : Page
    {
        public MainPage()
        {
            this.InitializeComponent();
            TestLog();
        
        }

        [Log]
        public int TestLog()
        {
            Debug.WriteLine("Test......................... " );
            return 5;
        }
  
    }

What do I wrong?
Is there any sample UWP project?

[gfraiteur]

You have to manually set this in your csproj file:

<PropertyGroup>
  <LangVersion>10.0</LangVersion>
</PropertyGroup?

We don't have an example at the moment.

[HakobyanAram]

@gfraiteur Thanks for the quick response! I did it, and added the following In <PropertyGroup>

<LangVersion>10.0</LangVersion>
<Nullable>enable</Nullable>

I get an error but my UWP application is running.

And you can see in the output window there is no text which writes OverrideMethod. There is only one text which corresponds TestLog method.

Here are the error messages:

Here is the project:

[gfraiteur]

Thank you. I am working on that. I haven't been able to get success so far, even with the newly released build.

[gfraiteur]

This issue is now fixed.

[HakobyanAram]

Thanks a lot. The error message is disappeared. And LogAttribute.OverrideMethod works correctly. But two warnings still appear.

[gfraiteur]

For the second warning, please create an issue and attach the files found in %TEMP%\Metalama\CrashReports.