Don't load empty json

couchpotato/core/settings/model.py

@@ -25,7 +25,7 @@ class JsonType(TypeDecorator):
         return toUnicode(json.dumps(value))
 
     def process_result_value(self, value, dialect):
-        return json.loads(value)
+        return json.loads(value if value else '{}')
 
 
 class Movie(Entity):