Problem with connection via proxy

[aga-one]

There is problem with connection via proxy. I use 'aiograph/examples/basics.py'
with 'telegraph = Telegraph(proxy ='my_proxy', proxy_auth='my_data')'
(this credentials work correctly with aiogram) and get error:
'aiohttp.client_exceptions.ClientConnectorError: Cannot connect to host api.telegra.ph:443 ssl:default [The semaphore timeout period has expired]'