Infura project url connection 404

I created new project with Infuria, then I wrote in Python these lines using Web3 python library:

from web3 import Web3

w3 = Web3(Web3.HTTPProvider(‘https://mainnet.infura.io/v3/[MY_PROJECT_ID]’))
w3.isConnected()

Result: False

I replaced MY_PROJECT_ID with the one assigned for my infura project, also if I put link in the browser I receive 404 Not Found

What I have to do to make it work?