finder does not recognize iphone, unable to connect to itune

If your computer doesn't recognize your iPhone, iPad, or iPod

The Finder in Apple Music no longer recognises my iPhone such that synching and/or changing Playlists on the iPhone are not possible. Re-booting did not resolve the issue. I've noticed that others are experiencing a similar problem.

my ipad not showing up in finder,All i see under locations Eddie's imac and mackintosh hd.I'm trying to copy audio file from mac to Ipad.