glue-wwt in jupyter notebook/lab: 404 error

[jfoster17]

Describe the bug
When I try to initialize a glue_wwt viewer in Jupyter notebook or Lab I get a 404 error for the main viewing window

Screenshots

Details:

• Operating System: MacOS 13.6.1
• Python version (python --version): Python 3.11
• Glue version (glue --version): 1.16.0
• How you installed glue: mamba

Additional context
Is there an example anywhere of the preferred way to use glue-wwt in a Jupyter notebook? In this case I'm adding it to the viewer registry, which is one way that it should work (and you can tell that it sort of works, cause you get the rest of the UI). I think my pywwt is working fine, since the standalone pywwt viewer in Jupyter Lab works fine for me.

[jfoster17]

Tagging @Carifio24

[Carifio24]

@jfoster17 Do you have the kernel data relay package installed?

[jfoster17]

I did not, and that fixed my problem. That should probably be an install requirement then?

[Carifio24]

I'm thinking we should add a jupyter optional requirements to the setup.cfg, with both that and glue-jupyter.

[Carifio24]

The linked PR adds these dependencies in upstream pywwt; I'm thinking we could then call on those in the install options here.