Error: 500 Internal Server Error

Sorry, the requested URL 'http://localhost/reader?url=https://www.rockymounttelegram.com/news/world/many-thorny-global-situations-hinge-on-us-election-outcome/article_6f8386a0-ffb5-59c1-8147-0416cad9560a.html' caused an error:

Unhandled exception