OneDrive Graph Client throwing System.TypeInitializationException in Xamarin.iOS project only

Question

This was working till few days back. It appears one of the recent updates to Xamain.iOS has broken it.

I have implemented OneDrive client in my project as per Build Xamarin apps with Microsoft Graph.

This is a Xamarin Forms project. Installed Microsoft.Graph only in the common project and installed Microsoft.Identity.Client in all projects.

After successful login into OneDrive Service, it is throwing the following exception:

System.TypeInitializationException
Message=The type initializer for 'System.Text.Json.JsonSerializer' threw an exception.

It is failing executing the following code:

        IDriveItemChildrenCollectionPage files = null;  
        files = await OdGraphClient.Me.Drive.Root  
            .Children  
            .Request()  
            .GetAsync();  

Answer 1

@Deva-MSFT The actual resolution was found in the accepted answer of jsonserializer-throws-exception-in-xamarinios.html

Added the following lines to iOS project file in the ItemGroup containing Package References:

<PackageReference Include="System.Memory" Version="4.5.4">
<IncludeAssets>none</IncludeAssets>
</PackageReference>
<PackageReference Include="System.Buffers" Version="4.5.1">
<IncludeAssets>none</IncludeAssets>
</PackageReference>

Answer 2

I would suggest you to get the latest pull and see if you can repro the issue. If yes, then report the issue at the project issues list.