how to fix BuildVocab.py

[shreesha345]

ERROR 'utils.CreateData' package not found Please install the module 'utils.CreateData' Generating dataset from raw data... Traceback (most recent call last): File "BuildVocab.py", line 133, in <module> main() File "BuildVocab.py", line 88, in main CreateData.createdata() NameError: name 'CreateData' is not defined

I wanted to train my whatsapp chat but i can't I tried many was please say me how to fix it