Graphs don't contain edges

[sikkel1]

First of all, excuse me if this is a stupid question as I am relatively new to working with pytorch.

When I download the dataset and want to take a look at the edges of the graphs, it looks like all the graphs have 0 edges. Am I doing something wrong or is this normal?

If I try to access a edge I always get this returned: tensor([], size=(2, 0), dtype=torch.int64)

Thank you so much in advance!