Thanks for your reports about YouTube, YouTube TV and YouTube Music access issues. We're working on resolving this and will let you know once fixed. We apologize for any inconvenience this may cause and will keep you updated.
I'm just gonna add me to the list of those who can't access it. Trying through the app. Wierdly though, for a moment, it did work when I tried to click a link (chrome loaded up the app to play a video) and it momentarily worked to go to 1 other video before failing again.