'DCGAN' has no object 'data'

I have downloaded the mnist data,. When I try to run the main.py code using the command in the readme. I get an error:

> if len(self.data) < self.batch_size:
> AttributeError: 'DCGAN' object has no attribute 'data' '

Start by running the command in the README against the downloaded MNIST data and inspect main.py where the DCGAN object accesses self.data. Confirm why the data attribute is missing, then verify that the README command runs without the AttributeError.

Written by the indexing model from the issue text.