Save Page Now button hangs while Archiving

[cgorringe]

Describe the bug

Bug report on the IA Safari extension from a patron, verified by Kay. The Save Page Now button displays Archiving URL and just hangs there. Patron wrote: “But I’ve checked and it seems to work - the website is archived on Wayback - it just doesn’t look like it’s working because it doesn’t go away on its own and reports that the page has been archived”