I am currently experiencing something strange with one of my routes' responses and haven't been able to find any information elsewhere.

So, let's say I make a call to a route in my controller with JQuery, like this. It's a POST action and I expect JSON data.

// Send the data
                type: "POST",
                enctype: 'multipart/form-data', //'application/json',  
                url: "/Claims/Application/SaveCurrentFormData",
                data: data,
                dataType: 'json', // we're expecting back a json
                processData: false,
                contentType: 'application/json',
                cache: false,
                timeout: 600000,
                success: function (result) {                      
                    for (var formCode in result.forms) {
                        var selector = "[data-formcode='" + formCode + "']";
                        $(selector + " [name='TicketDocumentId']").val(result.forms[formCode]);

                    for (var documentName in result.documents) {
                        var selector = "input[name='" + documentName + "']";
                        $(selector).data("ticketdocumentid", result.documents[documentName]);

                error: function (e) {
                    // Debug
                    console.log("Error saving form data: ", e.message, e);


On my method, I process some data and send a serialized version of the resulting data object:

// Build results object
saveResults.Add("forms", newForms);
saveResults.Add("documents", newDocs);

string dataJson = JsonConvert.SerializeObject(saveResults);

// Return a list of updated ticket documents with their respective IDs
return Content(dataJson);

A few days ago is when I originally wrote this. It was working, I was getting my JSON data back on the client. But something happened, I'm not sure when, and now all I get as a response is a literal "500". Please take a look at the screenshot:


I've tried using "return Json(saveResults)", and also different combinations, like expecting text instead of JSON in my POST action, and things like that. The thing is that no matter what I do, the response is always the same: "500". The status code is "200", though, so I don't really understand...

Any pointers would be greatly appreciated. This is a critical moment in the development of this project and I can't wait too long to fix this. :(

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As to the forum edit. There is a time limit on editing.

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I can't seem to find the "edit" option, but I wanted to add that even if I return Content("test"), I still get the same response body of "500" with a status of 200. So it doesn't seem to be anything related to the data I'm trying to return.

Sounds like a bug in the API to me. Did you write the backend too?

I'd use a tool like HTTPie/cURL so you can accurately and repeatably test requests

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