Is there any limitations to deserializing json on webgl?

I'm using the newtonsoft nugat (forced library on us) package to deseralize to my object over a http request, I send out one request get an ID then fire off another to get that info.

This fully works when I run a editor instance but as soon as I build out for webgl I get the issue: Exception has been thrown by the target of an invocation

The issue is second deserialization of my type, it's pulling the request it's just not storing it / setting my object. I'm kind of lost here so any help would be appreciated. I have a feeling it's the newtonsoft package but can't switch to another package to test.

   using (var www = UnityEngine.Networking.UnityWebRequest.Get(url))
             {
                 www.SetRequestHeader("Content-Type", "application/json");
 
                 var operation = www.SendWebRequest();
 
                 while (!operation.isDone)
                 {
                     Debug.Log("Waiting");
                     await Task.Yield();
                 }
 
                 if (www.result != UnityEngine.Networking.UnityWebRequest.Result.Success)
                 {
                     Debug.Log("Not successful");
                 }
                 
                 var result = Newtonsoft.Json.JsonConvert.DeserializeObject<T>(www.downloadHandler.text);
                 
                 return result;
 
             }