I want the ability to change the website’s favicon in the panel but nothing is showing up. I tried referencing this topic: Make Favicon Editable in the Kirby Panel but nothing seems to be working.
You would have to change your section, because it doesn’t have a multiple option, what you need is max: 1 instead.
Or, you would have to add an additional files field, where the user can then select the file. Then pick the file from that field. I’d use the solution outlined above in this case.