ModuleNotFoundError: No module named 'panel.pane.perspective' when running lumen

[eschares]

I'm having trouble with an error message "ModuleNotFoundError: No module named 'panel.pane.perspective' " when attempting to launch lumen https://lumen.holoviz.org/index.html.

I have panel 0.11.0a8 installed through conda with pyviz/label/dev. Any insights please?

[Hoxbro]

You need to upgrade panel. You can use this command conda update panel -c pyviz

[eschares]

That took my panel down from 0.11.0a8 back to 0.10.3.? I think I want to get to 0.11.1 but I can't see how to install it.

[Hoxbro]

Its hard to say what is stopping panel from updating in your base environment, try to do conda install panel=0.11 -c pyviz. If this do not work try to create a new environment. With something like this:

conda create -n holoviz
conda activate holoviz
conda install python=3.8 panel lumen -c pyviz

[eschares]

Thanks. I created the new environment and was able to finally get Panel version to 0.11.1 and Bokeh to 2.3 inside of it.

Now running the lumen command lumen serve dashboard.yaml --show with an example yaml file saved as the dashboard does launch a new localhost instance. But there are still many package dependencies that aren't installed in this new environment. I went through and installed dask, requests, aiohttp, fastparquet, and hvplot one by one using conda install before I gave up. I still don't have it working.

[philippjfr]

Thanks for being patient here and sorry about the issues. Hopefully I can get them sorted out asap. We'll start bundling environment/anaconda-project yaml files with the examples.

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