cat-fact url 503 error

[r-matsuzaka]

http://cat-fact.herokuapp.com/facts/random is still available?

When I run the first cell in the chapter2 notebook,

import requests
 
result = requests.get("http://cat-fact.herokuapp.com/facts/random")
print(result)
print(result.json())
print(result.json()['text'])

I got the error.