After HTML export, Altair chart rendered in Panel does not get rendered within the HTML page

Panel
1

Here is link to my html page which shows that the Altair chart does get rendered using Jupyter (output cell # 5), but not when rendered or wrapped within a Panel object (output cell # 6).

Is there an import I need to do or activate an extension somehow in order for the Altair chart to render with Panel in HTML output?

Thanks in advance!

2

There should only ever be one call to pn.extension and it must load all the optional dependencies you need. If it’s in a second call it will not be loaded correctly.

3

Thanks. I tried just one call before and it didn’t work. Re-tried again and now it is working. Perhaps, I forgot to restart the kernel prior to exporting to HMTL.