checkpoint doesn't exist

[elfeffe]

I'm trying to follow the tutorial
https://docs.floydhub.com/examples/style_transfer

But I get an error when I try to run this:
floyd run --gpu --env tensorflow-0.12:py2 --data narenst/datasets/coco-train-2014/1:images --data narenst/datasets/neural-style-transfer-pre-trained-models/1:models --data floydhub/datasets/imagenet-vgg-verydeep-19/3:vgg "python style.py --vgg-path /vgg/imagenet-vgg-verydeep-19.mat --train-path /images/train2014 --style examples/style/la_muse.jpg --base-model-path /models/la_muse.ckpt --epoch 1 --total-iterations 10 --checkpoint-dir ./checkpoints"

I get:
assertionError: checkpoint dir not found!