According to many RSS subscribers, Google’s news feed has stopped functioning.
Google news is disapproving their outdated feed subscription URLs by December 1st, 2017. If you’ve Google news subscriptions for now more than a year or so, you need to go through all the subscriptions and update them.
Head on to https://news.google.com and choose the section you want to create a custom section. Click RSS, at the bottom of the section page. Let the feed appear, you will get a new URL for the feed, copy that.
As per Google, the date of deprecating the URLs is 1st December 2017. But, the links seem to be broken before the date itself.
Google could have taken the approach of redirecting the old URLs to the new ones but why Google didn’t take this approach we don’t know yet.