cannot share from FCPX 10.4 to Youtube anymore

[Billy Young]

it’s so weird Doug,

I can log on to YouTube using Safari, with FCPX closed or Open,

I just opened iMovie, and tried to Share to YouTube,
exactly the same procedure followed as with FCPX,
with,
The same end result of Safari can’t connect to the Server with “127.0.0.1”

I know somehow it’s something to do with “127.0.0.1”,
but I’ve no idea what_????_????