Vivaldi can't find local printers
As of yesterday, Vivaldi would let me print to either of my local printers. Today, there is nothing shown under local destinations, the little arrow keeps circling, and Manage does not do anything. It can see one of my printers via Google, but attempting to print to that gets the hourglass running for several minutes.
Sounds more like an OS problem (for instance, if you spooler service is crashed). Vivaldi gets your printer list direct from the OS, except for its own PDF writer, and things like printing to Google Docs. My Vivaldi 1.2.470.11 on Win10 64 shows 18 local and network printers - every printer or internal printing app on every computer in the house.