If you run via the Python API and/or load the data via the Python API into a jupyter notebook, you can view the object inline. (I do this a lot with emperor plots). If you use
qiime2 import Visualization
viz = Visualization.load(vis.qzv)
viz
I think you should be able ot view inline in Jupyter. You can also just render them directly with the commands, but TBH, I find the python API more frustrating than CLI.
(You may need to run jupyter serverextension enable --py qiime2 --sys-prefix first to get the visualization to show up inline, if you haven't already enabled the extension)
Good news is it seems that the jupyter extension is still working on 2019.4 with these versions:
§ conda list jupyter
# packages in environment at /home/evan/.conda/envs/qiime2-2019.4:
#
# Name Version Build Channel
jupyter_client 5.2.4 py_3 conda-forge
jupyter_core 4.4.0 py_0 conda-forge
§ conda list notebook
# packages in environment at /home/evan/.conda/envs/qiime2-2019.4:
#
# Name Version Build Channel
notebook 5.7.8 py36_0 conda-forge
Bad news is it means I don't know what is going on with your machine. I was able to see the visualization in both Firefox and Chrome. What browser are you using (and what version)?
Hmm, we'll need to look closer at your computer then to figure out what is going on. Would you be able to open the development console and look for any errors in the Console tab (screenshot is fine), and if you don't see anything there, could you switch to the Network tab and reload the page (re-running the command in Jupyter).
There's going to be a lot of network requests, but I'm looking for one to /qiime2/view/<uuid> (pictured below).
I'm mostly interested in what the response code is, so in my case it was 200 indicating everything was fine, but you may not even have this network request happen depending on where the Jupyter repr is breaking (which we don't know yet).
Ah! Those console errors do indeed explain the situation! Thank you for those screenshots.
I suspect you are on the extended support release for Firefox (ESR) which you can see in Help>About (or perhaps your version of Firefox is truly very old).
This version preserves older APIs and doesn't include new ones (like fetch). That is why nothing shows up, as it isn't able to initiate a request (since the API it uses to do that isn't in Firefox ESR). If you have permissions to do so on your system, try installing a newer Firefox (or load it in Chrome/IE) and I think you will see it start working!
Could you provide a screenshot and describe what versions of software you are using?
Also, to confirm, you are having issues with the Jupyter extension for QIIME 2 visualizations? Jupyter itself? QIIME 2? Forwarding X11 over an SSH tunnel? Firefox? Or something else?