fix bug in DFS

            print("Multiple DFS locations are available, please specify one")

            raise ValueError("Multiple DFS locations are available")

        else:

            self.location = status_table["location"][status_table["status"]][0]

            if location is None:

                # set DFS automatically

                assert (

                    status_table["status"].sum() == 1

                ), "Multiple DFS locations are available"

                location = status_table["location"][status_table["status"]][0]

                print(f"Using DFS location: {location}")

            self.location = location

            self.config = CONFIG[self.location]

            print(f"Using DFS location: {location}")

            for k, v in CONFIG[loc]["dfs"].items():

            for k, v in CONFIG[self.location]["dfs"].items():

                os.environ.setdefault(k, str(v))

            # print("Setting redis config:")

            self.redis = Redis(location=loc)

            self.redis = Redis(location=self.location)

class Redis(redis.Redis):