Publish image with arcade expression

[MelanievanEnter]

Hi 

I was giving arcade expression a go and use this https://community.esri.com/t5/arcgis-pro-blog/using-arcgis-pro-and-arcade-expressions-to-create/ba-p...

So I shared the web map to AGOL so I can test how it display in the pop up setting but I got multiple warnings saying "an image element in the pop up may not display correctly because it uses a field or arcade expression for its file path". 

Do I have to create a folder in the AGOL, and save the images in order for this to work? I

[gis_KIWI4]

@MelanievanEnter - Hi, have you tried publishing this ignoring the warnings? If yes, what did the pop-ups look like? 

As a rule of thumb I publish my map with the pop-up and customize in the MapViewer.
You can customize the pop-up online quite easily. 

[MarkBockenhauer]

Is it the 'http:' ?   URL should work, try 'https:'