Signature Pad Droid. Resouce Designer issues.

Hi,
I was just dabbling with the Signature Pad, to have it implemented in a PCL project. That uses Xamarin forms,

Here is what I did so far:

• I installed a nuget package Acr.XamForms.Signature Pad in mt shared project.
• I installed Signature pad nuget in my Droid project.

• I installed Signature Pad nuget in my iOs project.

• In my shared project. I did the following:

XAML View:

In the code behind this is what is present:-

public partial class Page_SignaturePad : ContentPage
{
    public Page_SignaturePad()
    {
        InitializeComponent();

    }

    //Capture the user's signature.
    async void OnSaveSignature(object sender, EventArgs e)
    {
        try
        {
            var signature = padView.GetImage(Acr.XamForms.SignaturePad.ImageFormatType.Png);
            using (BinaryReader br = new BinaryReader(signature))
            {
                var result = br.ReadBytes((int)signature.Length);

            }
        }
        catch(Exception ex)
        {
            Helper_ErrorHandling.SendErrorToServer(ex);
        }
    }
}

It works well on iOS. However on Android when i try to build the project i get the following error: (attached screenshot)

Has anyone encountered and solved a similar issue.

I am on Xam forms 1.5.6417 . I believe that is what Signature pad needs