Several times I have seen the below message when trying to open Moviebase on my phone. In all cases, if I close the message and try to start Moviebase again, it works.
Do you still have the issue?
Yes, it is still happening multiple times per week. My guess is that you have a time-out waiting for a response from Google Play Services. In every case, a second try to start the app works. If I am correct, waiting a bit longer for the response might fix the problem.