Posting A Tweet On Imac

Well, tried to post my first tweet from iMac from artist website to Twitter and comes up"page not found.... I used the command c to copy the link on the browser and command V to paste the link..when I check the link in Twitter comes up page not found. ...Tried it multiple times,, I notice in the browser some of the link is dimmed,,but when I post the link it appears ok?

Disregard ...figuring it out!