My algorithm stopped working today with the following error. Could someone help take a look ?

Algorithm.Initialize() Error: During the algorithm initialization, the following exception has occurred: Loader.TryCreatePythonAlgorithm(): Unable to import python module ./cache/algorithm/main.pyc. AlgorithmPythonWrapper(): ModuleNotFoundError : No module named 'QuantConnect.Data.Custom.Fred'; 'QuantConnect.Data.Custom' is not a package  at    from QuantConnect.Data.Custom.Fred import *  File "main.py" in inout.py:line 4 ModuleNotFoundError : No module named 'QuantConnect.Data.Custom.Fred'; 'QuantConnect.Data.Custom' is not a package Stack Trace: During the algorithm initialization, the following exception has occurred: Loader.TryCreatePythonAlgorithm(): Unable to import python module ./cache/algorithm/main.pyc. AlgorithmPythonWrapper(): ModuleNotFoundError : No module named 'QuantConnect.Data.Custom.Fred'; 'QuantConnect.Data.Custom' is not a package  at    from QuantConnect.Data.Custom.Fred import *  File "main.py" in inout.py:line 4 ModuleNotFoundError : No module named 'QuantConnect.Data.Custom.Fred'; 'QuantConnect.Data.Custom' is not a package