We did have an issue earlier but it has been fixed now! You should be able to see the details in your YouTube analytics as normal.
Thanks Youtube Team Thank you for explaining our problem and helping us. 
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
Thanks Youtube Team Thank you for explaining our problem and helping us. 