I can't connect to my wife's iMac on the network anymore
My computer is on Catalina and hers is on Mojave, which has been the case for some time, but all of a sudden, I can't see her iMac on the network anymore and she can't see my iMac. Has Catalina suddenly become incompatible with sharing with Mojave on the network? Her iMac shows up on my Server Locations in Finder, as if it is seeing it, but it just won't connect. What's going on?
iMac Line (2012 and Later)