using (var scope = ServiceProvider.CreateScope())
{
  var dbContextLocal =
        scope.ServiceProvider.GetRequiredService<C4S_DataContext>();
  dbContextLocal.Database.EnsureCreated(); //Exception occurs here

  if (!dbContextLocal.Kontakte.Any())
  {
      var settingsViewModel = new SettingsViewModel(dbContextLocal);
      settingsViewModel.SyncDatabasesCommand.Execute(null);
  }
}