Program: 174247
Project: 174247
Buggy source:
private void handlingOnResponse(HandlingResponse handlingResponse,String TAG){
  if (!handlingResponse.response.isSuccessful()) {
    ErrorOutput errorOutput=null;
    if (handlingResponse.response.errorBody() != null) {
      try {
        errorOutput=(new Gson()).fromJson(handlingResponse.response.errorBody().string(),ErrorOutput.class);
      }
 catch (      IOException e) {
        e.printStackTrace();
      }
    }
    if (handlingResponse.response.code() == 401) {
      AppController.clearInfo();
      mContext.startActivity(LoginActivity.createIntent());
    }
 else     if (handlingResponse.response.code() == 400 && errorOutput != null && errorOutput.description.equals("String_Node_Str")) {
      listener.onFailure(handlingResponse.call,new Throwable("String_Node_Str"));
    }
 else     if (ConnectionDetector.isConnectedToInternet()) {
      if ((mContext instanceof Activity) && ((Activity)mContext).hasWindowFocus()) {
        ConnectionDetector.ShowServerProblemDialog(mContext,handlingResponse.callbackWithRetry);
      }
 else {
        Toasti.showS("String_Node_Str");
      }
    }
 else     ConnectionDetector.ShowNetwrokConnectionProblemDialog(mContext,handlingResponse.callbackWithRetry);
    return;
  }
  if ((handlingResponse.response).body() instanceof StatusOutput) {
    ((StatusOutput)(handlingResponse.response).body()).tag=TAG;
  }
  if (listener != null) {
    listener.onResponse(handlingResponse.call,handlingResponse.response);
  }
 else   if (adapterListener != null) {
    adapterListener.onResponse(handlingResponse.call,handlingResponse.response,handlingResponse.position);
  }
 else   if (tagListener != null) {
    tagListener.onResponse(handlingResponse.call,handlingResponse.response,TAG);
  }
 else   if (adapterTagListener != null) {
    adapterTagListener.onResponse(handlingResponse.call,handlingResponse.response,handlingResponse.position,TAG);
  }
}

Fixed version (ground truth):
private void handlingOnResponse(HandlingResponse handlingResponse,String TAG){
  if (!handlingResponse.response.isSuccessful()) {
    ErrorOutput errorOutput=null;
    if (handlingResponse.response.errorBody() != null) {
      try {
        errorOutput=(new Gson()).fromJson(handlingResponse.response.errorBody().string(),ErrorOutput.class);
      }
 catch (      IOException e) {
        e.printStackTrace();
      }
    }
    if (handlingResponse.response.code() == 401) {
      AppController.clearInfo();
      mContext.startActivity(LoginActivity.createIntent());
    }
 else     if (handlingResponse.response.code() == 400 && errorOutput != null && errorOutput.description != null && errorOutput.description.equals("String_Node_Str")) {
      listener.onFailure(handlingResponse.call,new Throwable("String_Node_Str"));
    }
 else     if (ConnectionDetector.isConnectedToInternet()) {
      if ((mContext instanceof Activity) && ((Activity)mContext).hasWindowFocus()) {
        ConnectionDetector.ShowServerProblemDialog(mContext,handlingResponse.callbackWithRetry);
      }
 else {
        Toasti.showS("String_Node_Str");
      }
    }
 else     ConnectionDetector.ShowNetwrokConnectionProblemDialog(mContext,handlingResponse.callbackWithRetry);
    return;
  }
  if ((handlingResponse.response).body() instanceof StatusOutput) {
    ((StatusOutput)(handlingResponse.response).body()).tag=TAG;
  }
  if (listener != null) {
    listener.onResponse(handlingResponse.call,handlingResponse.response);
  }
 else   if (adapterListener != null) {
    adapterListener.onResponse(handlingResponse.call,handlingResponse.response,handlingResponse.position);
  }
 else   if (tagListener != null) {
    tagListener.onResponse(handlingResponse.call,handlingResponse.response,TAG);
  }
 else   if (adapterTagListener != null) {
    adapterTagListener.onResponse(handlingResponse.call,handlingResponse.response,handlingResponse.position,TAG);
  }
}