Endpoint elyra/schemaspace not found.

Just tried installing extension in jupyterlab, got the same result in a couple of different configurations, e.g.

$ jupyter --version
Selected Jupyter core packages...
IPython          : 8.3.0
ipykernel        : 6.13.0
ipywidgets       : 7.7.0
jupyter_client   : 7.3.1
jupyter_core     : 4.10.0
jupyter_server   : 1.17.0
jupyterlab       : 3.4.2
nbclient         : 0.6.3
nbconvert        : 6.5.0
nbformat         : 5.4.0
notebook         : 6.4.11
qtconsole        : 5.3.0
traitlets        : 5.2.0

It requested a rebuild, and upon starting after the build, I get Endpoint elyra/schemaspace not found.

[nhpackard]

My main difficulty was that I was trying to install an elyra extension (which was listed on my long list of possible jupyter lab extensions) without having installed the elyra server extension.

My main suggestion for a quick fix that would have put me on the right track is to put a check for elyra installation (ideally also for jupyter server extension enabled) right when the extension “install” button is hit.

Effectively, with the appropriate error message, you could enforce the suggestion of @akchinSTC, “Suggest installing Elyra via the python package as opposed to the extensions menu in JL” as policy, eliminating any possibility of extension installation without elyra installation.

[nhpackard]

@ptitzler @akchinSTC and @kevin-bates : Thanks very much for your patience. I hit “install @elyra/metadata-extension” without having any idea that I needed to install the (rather substantial) server side package to make it work. (maybe a more informative error message indicating the need for installing the server side package would be nice?)

After horsing around with some conflicting version requirements, I now have elyra 3.10.1 installed and enabled as a server extension. jupyter elyra seems to work fine.

Thanks again for your patience, and I look forward to exploring elyra.