500 error when widget is set to "Goefiled from another field"

I have a site where the geofield is set to take the location from the address field. This worked fine when I built it back in 2015, but somehow, perhaps due to module updates, it no longer works. When I try to save a node with the geofield the server quickly returns a 500 error (little to no time elapses so it isn't the script timing out). The address field is set to US addresses only, and I can confirm that this functionality worked previously. If I try to edit the geofield in the content type's settings, this also returns a 500 error. If I set the widget type to "Latitude / Longitude" or WKT, the field the works fine. I can edit the properties of the field, and I can also save nodes when the field is set to the Lat/Long method without error.

Using:
Geofield 7.x-2.3
Geocoder 7.x-1.3
Address Field 7.x-1.2