Quickblox frequent crash in Android

I have been working with Quickblox SDK for past few weeks and have developed applications with features of one-to-one, group chat as well as WebRTC too.
I am using 3.0 version of the SDK due to some of my requirements and I will not be able to change it.

There is one crash which I am frequently facing in my app in no specific screen. I have reported this to Quickblox as well but did not help much.

The crash log is as below :

java.lang.NullPointerException: 
at com.quickblox.chat.model.QBChatDialog.initChat (Unknown Source)
at com.quickblox.chat.model.QBChatDialog.initChatFromRest (Unknown Source)
at com.quickblox.chat.model.QBDialogDeserializer.deserialize (Unknown Source)
at com.quickblox.chat.model.QBDialogDeserializer.deserialize (Unknown Source)
at com.google.a.v.b (Unknown Source)
at com.google.a.b.a.l.b (Unknown Source)
at com.google.a.b.a.b$a.a (Unknown Source)
at com.google.a.b.a.b$a.b (Unknown Source)
at com.google.a.b.a.i$1.a (Unknown Source)
at com.google.a.b.a.i$a.b (Unknown Source)
at com.google.a.f.a (Unknown Source)
at com.google.a.f.a (Unknown Source)
at com.google.a.f.a (Unknown Source)
at com.quickblox.core.parser.QBJsonParser.parseJsonResponse (Unknown Source)
at com.quickblox.core.parser.QBLimitedJsonParser.parseJsonResponse (Unknown Source)
at com.quickblox.core.parser.QBJsonParser.parse (Unknown Source)
at com.quickblox.core.Query$a.completedWithResponse (Unknown Source)
at com.quickblox.core.Query.completedWithResponse (Unknown Source)
at com.quickblox.core.server.HttpRequestRunnable$1.handleMessage (Unknown Source)
at android.os.Handler.dispatchMessage (Handler.java:111)
at android.os.Looper.loop (Looper.java:238)
at android.app.ActivityThread.main (ActivityThread.java:6006)
at java.lang.reflect.Method.invoke (Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run (ZygoteInit.java:937)
at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:798)   

Just to be noted, I could not find any file with method using any of mentioned in crash log like initChat() or anything else and crash can come to any of the screen in app. So not sure which code I should share here.
I would be thankful for any suggetions.

Looks like you load dialogs and not logged in to the chat in this moment. Use latest version of QuickBlox Android SDK with fix this issue.