new schemas

apps/mobile/packages/features/client/hubs/lib/src/data/repositories_impl/hub_repository_impl.dart

@@ -29,17 +29,14 @@ class HubRepositoryImpl implements HubRepositoryInterface {
     final business = await _getBusinessForCurrentUser();
     final teamId = await _getOrCreateTeamId(business);
     final city = business.city;
-    if (city == null || city.isEmpty) {
-      throw Exception('Business city is missing.');
-    }
 
     final result = await _dataConnect
         .createTeamHub(
           teamId: teamId,
           hubName: name,
           address: address,
-          city: city,
         )
+        .city(city?.isNotEmpty == true ? city : '')
         .execute();
     final createdId = result.data?.teamHub_insert.id;
     if (createdId == null) {