Every time that I try and use 'perform analysis' in ArcGIS online, (while in map viewer classic), an unnamed and unnumbered error occurs. I can't seem to find the issue on my side. It might have something to do with the fact that my data was extracted from an excel document using addresses and cities, rather than coordinates?

This is an image of the error message (how does this help me!)
Thanks to anyone that helps with this issue,
David