Python: Feedparser published_parsed cannot access CNN's RSS pubDate

[Dobbsjr]

I'm currently making an RSS reader, and every other RSS feed I've tried has worked, but my site crashes every time a CNN feed is inputted. The parsed items are put into a list and sorted by pubDate.

for source in sources: 
	rss = feedparser.parse(source.url) 
    
	try: 
		items.extend(rss["items"]) 
	except KeyError: 
		continue 
        
items = list(reversed(sorted(items, key=lambda item: item["updated_parsed"])))

Is there a problem with my code or is it CNN's feed?