I'm sure this is simple but i'm stuck.
Been able to develope an app following:
https://blog.streamlit.io/introducing-multipage-apps/
Except for being able to save the pages with an emoji for instance '01__main_page.py'
When I try i get:
Can someone please advise?
Thanks!

I had a similar issue when I was saving my script to a shared drive in my workplace. I think it was a setting in the shared drive that did not permit emojis in filenames. When I moved the script to the local hard drive the problem resolved (though I think the implementation of emojis within the filename is distinctly suboptimal).