JSON text did not start with array or object

Question

Working with an iOS app managing data on a Parse-Server (/Heroku). I have the following issue when trying to save data.

Here is the code for the function where the problem happens:

func saveDataBlockOnline(_ dico: [String:String]) {
    let psvClassName = "Goodies",
    dataUnit=PFObject(className: psvClassName,
                      dictionary: dico)
    dataUnit.saveInBackground {
        (succeeded:Bool, error:Error?) in
        if succeeded {
            // Do something useful.
        } else {print("\(#function) Error:\(error ?? "" as! Error)")}
    }
}

Here is the error I get:

saveDataBlockOnline Error:Error Domain=NSCocoaErrorDomain Code=3840 "JSON text did not start with array or object and option to allow fragments not set." UserInfo={NSDebugDescription=JSON text did not start with array or object and option to allow fragments not set.}

I guess I am getting some JSON answer that I don't use properly. So how should I modify the code?

There are other posts on the subject, but nothing that I found with a real solution.

A few more details may be useful:

The data saving on the server itself was working. But things started to go wrong when I added some cloud code, namely a Parse.Cloud.beforeSave to have a better control on how things are happening.

saveInBackground is not my code. It is part of parse. And it is working if I do not use cloud code, so saveInBackground is not the issue. — Michel, Feb 28 '18 at 07:00
Show us an example of dico. From just the code you've shown it's the only culprit. — Jake T., Feb 28 '18 at 15:20
Here is one example: dico = ["sentence": "1969/07/20", "orderKey": "151980480109587", "explanation": "Neil Armstrong USA."] — Michel, Mar 01 '18 at 02:52

score 0 · Answer 1 · answered Feb 28 '18 at 07:21

0

The data you want to parse in not in correct format according to error message. Check your dictionary and Object(dataUnit) format

answered Feb 28 '18 at 07:21

Rahul Sharma

36
2

You mean the dico variable? dataUnit is only produced by PFObject. – Michel Feb 28 '18 at 07:40
yeah dico variable – Rahul Sharma Feb 28 '18 at 10:03
Here is one example: dico = ["sentence": "1969/07/20", "orderKey": "151980480109587", "explanation": "Neil Armstrong USA."] – Michel Mar 01 '18 at 02:52
Can you please share the debug console (po dico) for this method – Rahul Sharma Mar 01 '18 at 04:53
What is "po dico" ? I did : print("dico = \(dico)") when entering the function to get the result posted in my previous command. – Michel Mar 01 '18 at 10:02

JSON text did not start with array or object

1 Answers1