Missing training data in mnist_sample

Hi, I went through lesson 1 and successfully run it in paperspace gradient environment.
However when I reached MNIST_SAMPLE here:

path = untar_data(URLs.MNIST_SAMPLE); path
tfms = get_transforms(do_flip=False)
data = ImageDataBunch.from_folder(path, ds_tfms=tfms, size=26)

I got errors saying there is missing folder with label 7 here /course-v3/nbs/dl1/data/mnist_sample/train
Folder with name 3 exists.

To me it looks like this course is corrupted. Adding manually images is a pain. How to fix this? Is this an issue on paperspace side or with the course?

Also untar_data is unable to download content from this location http://files.fast.ai/data/examples/mnist_sample. There is an error 404