Lesson 1 - Errors in ImageBunch.from_name_re on AWS server

Hi there, new user here.
I’ve followed the server setup instructions for AWS, on a p3.2xlarge machine, with the recommended DL image.
I created a dedicated conda env for fastai.
When running lesson 1, this command [Cell 10 in the original notebook]:
data = ImageDataBunch.from_name_re(path_img, fnames, pat, ds_tfms=get_transforms(), size=224, bs=bs).normalize(imagenet_stats)
Throws multiple instances of an error about parameters changing in v.1.4.0:

And ends with an error about something worng with the dataset:

And the following cell throws an exception as well.

According to conda list, I have PyTorch 1.3.0, and fastai 1.0.58
Is there any help to be had? Haven’t seen a topic about this error here yet