Seeing no media by loading tweets

[JorisGanne]

First of all, thank you for such a nice example of a webapp analyzing tweets!
I tried to include some of those things within another project but I had some struggles about streaming the tweets.
I succeeded in seeing the text, within the typical twitter layout, of a tweet but there are no images displaying...
I have the following code:

output$tweet_random <- renderUI({ tweets_most() %>% arrange(desc(favorite_count)) %>% slice(2) %>% pmap(get_tweet_blockquote) %>% .[[1]] %>% HTML() })

Am I doing something wrong?
Thank you in advance for your help!