Chrome Version       : 67.0.3396.87 (Official Build) (64-bit)
URL : https://www.youtube.com/feed/subscriptions/u
Behavior in Safari 4.x/5.x: N/A
Behavior in Firefox 3.x/4.x: N/A

What steps will reproduce the problem?
(1) Be logged into google
(2) Go to https://www.youtube.com/feed/subscriptions/u

If not logged in you will be prompted to log in then proceedget the same error

Screenshot attached and pastebin contains the what was in the screenshot.
https://pastebin.com/2fEqEH91

 

Deleted: 1.PNG 148 KB

	1.PNG 148 KB View Download