saveInBackground method causes error: The data couldn’t be read because it isn’t in the correct format.

[agordeev]

Issue Description

I have a class called Image, which has image property of PFFile type. When I'm trying to create a new object by calling saveInBackground method, the server returns this 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.}

error.localizedDescription:

The data couldn’t be read because it isn’t in the correct format.

Save operations on other classes work fine. The server log doesn't even show that there is POST request to Image class.

Any ideas what's wrong?

Environment Setup

Parse SDK version: 1.13.0
Bolts: 1.7.0

• Server
  • parse-server version: 2.2.14.
  • parse-dashboard version: 1.0.14
  • Operating System: Ubuntu 10.14

[agordeev]

Also this cloud code doesn't work as well:

var query = new Parse.Query("UserProfile");
query.equalTo("objectId", userProfileId);
query.first().then(function(userProfile) {
    ///...
},
function(error) {
  response.error("code=" + error.code + ": " + error.message);
});

Returns this error:

code=107: Received an error with invalid JSON from Parse: Cannot POST /parse/classes/UserProfile

[agordeev]

Seems like the issue was related to wrong serverURL variable in server configuration file.

[omarojo]

How come you were successfully saving other Classes, but that one was failing. And it turned out to be the serverURL ?
I have the same issue, but my URLs are fine.