Mapping tutorial: loading IGV browser does not work

Under "Visualization using a Genome Browser (IGV)", step 2 does not work, at least on usegalaxy.org:
https://github.com/galaxyproject/training-material/blame/master/topics/sequence-analysis/tutorials/mapping/igv.md#L10-L11

If this is a know problem, maybe remove that step altogether? Or, at least, mark step 1 as recommended?

EDIT: this is also (or even more) relevant to this: https://training.galaxyproject.org/training-material/topics/introduction/tutorials/igv-introduction/tutorial.html

Open topics/sequence-analysis/tutorials/mapping/igv.md and the linked introduction IGV tutorial, then reproduce step 2 on usegalaxy.org. Compare the two tutorial paths and determine which step or recommendation needs updating. Done means the affected instructions clearly guide learners through a working IGV-browser workflow.

Written by the indexing model from the issue text.