fixed an issue when location is not specified

myslicelib/model/resource.py

@@ -15,7 +15,9 @@ class Resource(Entity):
     def __init__(self, data = {}):
         if 'location' in data:
             # infere the city/country based on coordinates
-            data['location'] = self.get_address(HDict(data['location']))
+            if 'location' in data and data['location']:
+                data['location'] = self.get_address(HDict(data['location']))
+
             # infere coordinates from the city/country
             #location = get_coordinates(location)
         super().__init__(data)