Xamarin Forms "Value cannot be null parameter:stream" on StreamReader

I've been trying to utilize a file that I have on my PC in Xamarin.Forms and after some error fixing and researching I learnt that you cannot reference it locally but have to embed it into Xamarin as a resource. I've done so by accessing the file with Stream and now I would like to convert that Stream into a string using StreamReader. Now I get a Value cannot be null parameter:stream error.

namespace AimlTest
{
    // Learn more about making custom code visible in the Xamarin.Forms previewer
    // by visiting https://aka.ms/xamarinforms-previewer
    [DesignTimeVisible(true)]
    public partial class MainPage : ContentPage
    {
        public SimlBot chatbot;
        public MainPage()
        {
            InitializeComponent();

            chatbot = new SimlBot();
            var assembly = IntrospectionExtensions.GetTypeInfo(typeof(MainPage)).Assembly;
            Stream stream = assembly.GetManifestResourceStream("AimlTest.Knowledge.simplk");
            StreamReader reader = new StreamReader(stream);
            string file = reader.ReadToEnd();

            var packageString = File.ReadAllText(file);
            chatbot.PackageManager.LoadFromString(packageString);
        }

        private void Button_Clicked(object sender, EventArgs e)
        {
            var result = chatbot.Chat(UserEntry.Text);
            BotEntry.Text = string.Format("User: {0}\nBot: {1}\n{2}", UserEntry.Text, result.BotMessage, BotEntry.Text);
            UserEntry.Text = string.Empty;

        }
    }
}

And yes, I have set my file to an EmbeddedResouce
At this point, I believe I may have a bug.