I am writing a telegram bot on the aiogram framework. Everything was good when I run it, but today I am getting error,Cannot connect to host api.telegram.org:443 ssl:default I do not know what's problem.
I am using Ubuntu 20.04.2 LTS
Here is the full error
Traceback (most recent call last): File "/home/mirodil/.local/share/virtualenvs/allinone-kbyzCwMv/lib/python3.8/site-packages/aiohttp/connector.py", line 1154, in _create_direct_connection hosts = await asyncio.shield(host_resolved) File "/home/mirodil/.local/share/virtualenvs/allinone-kbyzCwMv/lib/python3.8/site-packages/aiohttp/connector.py", line 880, in _resolve_host addrs = await self._resolver.resolve(host, port, family=self._family) File "/home/mirodil/.local/share/virtualenvs/allinone-kbyzCwMv/lib/python3.8/site-packages/aiohttp/resolver.py", line 33, in resolve infos = await self._loop.getaddrinfo( File "/usr/lib/python3.8/asyncio/base_events.py", line 825, in getaddrinfo return await self.run_in_executor( File "/usr/lib/python3.8/concurrent/futures/thread.py", line 57, in run result = self.fn(*self.args, **self.kwargs) File "/usr/lib/python3.8/socket.py", line 918, in getaddrinfo for res in _socket.getaddrinfo(host, port, family, type, proto, flags):socket.gaierror: [Errno -3] Temporary failure in name resolutionThe above exception was the direct cause of the following exception:Traceback (most recent call last): File "/home/mirodil/.local/share/virtualenvs/allinone-kbyzCwMv/lib/python3.8/site-packages/aiogram/bot/api.py", line 139, in make_request async with session.post(url, data=req, **kwargs) as response: File "/home/mirodil/.local/share/virtualenvs/allinone-kbyzCwMv/lib/python3.8/site-packages/aiohttp/client.py", line 1138, in __aenter__ self._resp = await self._coro File "/home/mirodil/.local/share/virtualenvs/allinone-kbyzCwMv/lib/python3.8/site-packages/aiohttp/client.py", line 535, in _request conn = await self._connector.connect( File "/home/mirodil/.local/share/virtualenvs/allinone-kbyzCwMv/lib/python3.8/site-packages/aiohttp/connector.py", line 542, in connect proto = await self._create_connection(req, traces, timeout) File "/home/mirodil/.local/share/virtualenvs/allinone-kbyzCwMv/lib/python3.8/site-packages/aiohttp/connector.py", line 907, in _create_connection _, proto = await self._create_direct_connection(req, traces, timeout) File "/home/mirodil/.local/share/virtualenvs/allinone-kbyzCwMv/lib/python3.8/site-packages/aiohttp/connector.py", line 1166, in _create_direct_connection raise ClientConnectorError(req.connection_key, exc) from excaiohttp.client_exceptions.ClientConnectorError: Cannot connect to host api.telegram.org:443 ssl:default [Temporary failure in name resolution]During handling of the above exception, another exception occurred:Traceback (most recent call last): File "app.py", line 18, in <module> executor.start_polling(dp, on_startup=on_startup) File "/home/mirodil/.local/share/virtualenvs/allinone-kbyzCwMv/lib/python3.8/site-packages/aiogram/utils/executor.py", line 45, in start_polling executor.start_polling( File "/home/mirodil/.local/share/virtualenvs/allinone-kbyzCwMv/lib/python3.8/site-packages/aiogram/utils/executor.py", line 320, in start_polling loop.run_until_complete(self._startup_polling()) File "/usr/lib/python3.8/asyncio/base_events.py", line 616, in run_until_complete return future.result() File "/home/mirodil/.local/share/virtualenvs/allinone-kbyzCwMv/lib/python3.8/site-packages/aiogram/utils/executor.py", line 372, in _startup_polling await self._welcome() File "/home/mirodil/.local/share/virtualenvs/allinone-kbyzCwMv/lib/python3.8/site-packages/aiogram/utils/executor.py", line 361, in _welcome user = await self.dispatcher.bot.me File "/home/mirodil/.local/share/virtualenvs/allinone-kbyzCwMv/lib/python3.8/site-packages/aiogram/bot/bot.py", line 30, in me setattr(self, '_me', await self.get_me()) File "/home/mirodil/.local/share/virtualenvs/allinone-kbyzCwMv/lib/python3.8/site-packages/aiogram/bot/bot.py", line 228, in get_me result = await self.request(api.Methods.GET_ME, payload) File "/home/mirodil/.local/share/virtualenvs/allinone-kbyzCwMv/lib/python3.8/site-packages/aiogram/bot/base.py", line 231, in request return await api.make_request(await self.get_session(), self.server, self.__token, method, data, files, File "/home/mirodil/.local/share/virtualenvs/allinone-kbyzCwMv/lib/python3.8/site-packages/aiogram/bot/api.py", line 142, in make_request raise exceptions.NetworkError(f"aiohttp client throws an error: {e.__class__.__name__}: {e}")aiogram.utils.exceptions.NetworkError: Aiohttp client throws an error: ClientConnectorError: Cannot connect to host api.telegram.org:443 ssl:default [Temporary failure in name resolution]