Orca export problems and questions

I installed v4 of plotly and v 1.2.1 of orca on a system running Archlinux. With the default browser renderer, a new instance is created every time the python file is rerun. Is it possible to configure plotly to have just one instance, that is updated?

Also, I am unable to get the other renderers working properly. With for example ‘fig.show(renderer=png)’ in tst.py, the file generated by ‘python tst.py > tst.png’ is unreadable with image viewers feh, eog, etc. Similar problems with the other renderers mentioned.

I would appreciate any feedback on getting these issues resolved.