Applozic - Ignoring header Application-Key because its value was null

Question

I am new to Applozic and I am integrating it on an android app. When I logged in on the applozic server, this

Here is my code on Login

        User user = new User();
        user.setUserId(UserID);
        user.setDisplayName(strFullName); 
        user.setEmail(loginEmail); //optional
        user.setAuthenticationTypeId(User.AuthenticationType.APPLOZIC.getValue());
        user.setPassword(loginPass); 
        user.setImageLink("");

        mAuthTask = new UserLoginTask(user, listener,context);
        mAuthTask.execute((Void) null);