I have the following code but when executed it fails on " var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();"

I have run the query in the playground with my apikey and it works. When I run it here I get a 500 error with no details.

var q2 = new GraphQLRequest

{

Query = @"

query {

boards (limit:3) {

id

name

items {

id

name

column_values {

id

text

}

}

}

}"

};

            var httpWebRequest = (HttpWebRequest)WebRequest.Create("https://api.monday.com/v2/");

            httpWebRequest.ContentType = "application/json; charset=UTF-8";

            httpWebRequest.Method = "POST";

            httpWebRequest.Headers.Add("Authorization", apiKey);



            using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))

            {

                streamWriter.Write(q2.Query);

            }



            var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();

            using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))

            {

                var result = streamReader.ReadToEnd();

            }