We are having same difficulty. Our many client sites down because of this glitch. There is no update on https://dev.twitter.com/status as well. Please, provide us with resolution.
Died on me today as well.
same problem, very frustrating
Appears to be working again finally (for me).
Confirmed
Up and running again! Dungeon Wagon Ready for Release on iOS! Thanks twitter devs! 
Still not working for me ):
Yep, this is working again for me 
Thanks for the fast resolution @Twitter Dev’s
@VibeDetective - Try clearing your browser cache to see if that helps in your case.
It is up and working again for us. Thanks @Twitter and @episod
episod
#31
Glad to hear the situation has improved. I believe this to now be fixed. Let me know if you continue seeing the issue.
The widget is still not working on our site. New Tweets don’t appear on the widget. Worked great at first, but stopped working Monday. Please let me know how to fix this.
suehami
#37
Our timeline widget has been off and on for the past 2 - 3 days, any ideas why twitter?
Collection widget currently seems to be experiencing the same issue of being unable to load tweets (via dev console>widgets.js:8) as described in this old discussion.