What classes to add in Quickblox for Facebook Sign Up

Hello,

First of all let me apologize in advance, in case I am starting this thread in a wrong sub-forum.

My case is as follows: A freelancer has developed an app for us, and given us the source code. It uses Quickblox, Facebook Sign Up and a google developers account for back end stuff(We are still unaware of what the google devs account is used for). Now we have made new quickblox and facebook developer accounts and are trying to connect them with the app. Basic connection with facebook devs and quickblox is done by now. The precise problem is as follows (using genymotion emulator): When I get to the point where I sign up with Facebook in the app, it gives me an error saying "Undefined class". Also, looking at android monitor, I receieve the following error:

Code:

---

04-14 11:47:53.990 10608-10608/com.alo.memechat D/QBASDK: *********************************************************
                                                          *** RESPONSE *** 1bf29328-d1e7-4c56-82e2-d735787d7907 ***
                                                          STATUS : 403
                                                          HEADERS
                                                              QuickBlox-REST-API-Version=0.1.1
                                                              X-Runtime=0.042492
                                                              Content-Length=30
                                                              X-UA-Compatible=IE=Edge,chrome=1
                                                              X-Request-Id=5af3032f5e5043f05dd78cd300d71794
                                                              X-Rack-Cache=invalidate, pass
                                                              Connection=Close
                                                              X-Android-Response-Source=NETWORK 403
                                                              Server=nginx/1.8.1
                                                              QB-Token-ExpirationDate=2016-04-14 17:47:50 UTC
                                                              Cache-Control=no-cache
                                                              Status=403 Forbidden
                                                              X-Android-Selected-Transport=http/1.1
                                                              Date=Thu, 14 Apr 2016 15:47:53 GMT
                                                              Access-Control-Allow-Origin=*
                                                              X-Android-Received-Millis=1460648873980
                                                              Content-Type=application/json; charset=utf-8
                                                              X-Android-Sent-Millis=1460648873669
                                                          BODY
                                                              '{"errors":["Undefined class"]}'

---

Now I have gotten enough information from my developer, that I need to add some classes in the quickblox account. However I don't have a single clue as to what kind of classes they need to be.

So all in all, I apologize if the information presented is lacking. If anything else is needed, please tell me and I will do my best to provide it. So, can anyone help me?

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