Linked Colab isn't working

[umm-maybe]

Hello, this may or may not be the maintainer's responsibility, but the Colab linked for training doesn't appear to be working. Got the following error:

---

TypeError Traceback (most recent call last)
in <cell line: 1>()
----> 1 next(iter(train_dataset))

in iter(self)
30
31 def iter(self):
---> 32 iterator = iter(self.dataset)
33 more_examples = True
34 while more_examples:

TypeError: 'method' object is not iterable