Attempting to retrieve news data before April 2017 using the get_news_headlines() method always returns no results. After that time, many results can be gained. Am I doing something wrong?
It's a known limit from the News back-end for this API : user can't retrieve news older than 15 months.
@cynthiatuotuoPlease see the answer on this thread.
I see. That seems rather restrictive, but thank you for the information.