Android the dark theme does not activate with MODE_NIGHT_AUTO

I'm implementing to change the theme of the app depending on whether it's day or night, with NightMode of Android

I have defined the two themes, day and night, that work correctly

To activate the dark / night AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES);

To activate the clearing / day AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO);

But when specifying to activate the light or dark depending on the time of the system, with the value MODE_NIGHT_AUTO never activates at night.

In the log I receive

  

Could not get last known location. This is probably because of the app   does not have any location permissions. Falling back to hardcoded   sunrise / sunset values