Marten Compiled Query error

Program.cs

    class Program
    {
        private static DocumentStore _documentStore;

        static void Main(string[] args)
        {
            var connectionString =
                $"SCRUBBED";
            _documentStore = DocumentStore.For(_ =>
                                               {
                                                   _.Connection(connectionString);
                                               });

            var id3 = Guid.NewGuid();

            using(var session = _documentStore.OpenSession())
            {
                session.Store(new TestClass {TestString = "test1"});
                session.Store(new TestClass {TestString = "test2"});
                session.Store(new TestClass {TestString = "test3", Id = id3});
                session.SaveChanges();
            }

            using(var session = _documentStore.OpenSession())
            {
                var result = session.Query(new CompiledQuery2 { IdValue = id3 });
                Console.WriteLine(result);

                result = session.Query(new CompiledQuery1 { StringValue = "test2" });
                Console.WriteLine(result);
            }
        }
    }

    public class CompiledQuery1 : ICompiledQuery<TestClass, bool>
    {
        public string StringValue { get; set; }

        public Expression<Func<IQueryable<TestClass>, bool>> QueryIs()
        {
            return q => q.Any(x => x.TestString.EqualsIgnoreCase(StringValue));
        }
    }

    public class CompiledQuery2 : ICompiledQuery<TestClass, bool>
    {
        public Guid IdValue { get; set; }

        public Expression<Func<IQueryable<TestClass>, bool>> QueryIs()
        {
            return q => q.Any(x => x.Id == IdValue);
        }
    }

    public class TestClass
    {
        public Guid Id { get; set; }
        public string TestString { get; set; }
    }