Letsencrypt not working anymore

I have some updates in admin panel, but it does not install when I upgrade the system. They hang there.
Is it possible to have a conflict between python2 and python3 versions?
Maybe some updates from Ubuntu conflict?
But, I repeat, the old sites automatically extend their SSL certificates. For new domains the certificates are generated but it seems that they cannot be verified.

 

Traceback (most recent call last):
File "/usr/bin/letsencrypt", line 11, in <module>
load_entry_point('certbot==0.27.0', 'console_scripts', 'certbot')()
File "/usr/lib/python3/dist-packages/certbot/main.py", line 1364, in main
return config.func(config, plugins)
File "/usr/lib/python3/dist-packages/certbot/main.py", line 1254, in certonly
lineage = _get_and_save_cert(le_client, config, domains, certname, lineage)
File "/usr/lib/python3/dist-packages/certbot/main.py", line 120, in _get_and_save_cert
lineage = le_client.obtain_and_enroll_certificate(domains, certname)
File "/usr/lib/python3/dist-packages/certbot/client.py", line 391, in obtain_and_enroll_certificate
cert, chain, key, _ = self.obtain_certificate(domains)
File "/usr/lib/python3/dist-packages/certbot/client.py", line 334, in obtain_certificate
orderr = self._get_order_and_authorizations(csr.data, self.config.allow_subset_of_names)
File "/usr/lib/python3/dist-packages/certbot/client.py", line 370, in _get_order_and_authorizations
authzr = self.auth_handler.handle_authorizations(orderr, best_effort)
File "/usr/lib/python3/dist-packages/certbot/auth_handler.py", line 82, in handle_authorizations
self._respond(aauthzrs, resp, best_effort)
File "/usr/lib/python3/dist-packages/certbot/auth_handler.py", line 155, in _respond
self._poll_challenges(aauthzrs, chall_update, best_effort)
File "/usr/lib/python3/dist-packages/certbot/auth_handler.py", line 226, in _poll_challenges
raise errors.FailedChallenges(all_failed_achalls)
certbot.errors.FailedChallenges: Failed authorization procedure.

 

It safe for Ispconfig and Ubuntu 18.04?

Code:

sudo add-apt-repository ppa:certbot/certbot

This is the PPA for packages prepared by Debian Let's Encrypt Team and backported for Ubuntu.
Note: Packages are only provided for currently supported Ubuntu releases.
More info: https://launchpad.net/~certbot/+archive/ubuntu/certbot
Press [ENTER] to continue or Ctrl-c to cancel adding it.

 

After using the above command, new packages appeared (cerbot + python3).
I'm trying tonight to make the updates and I'll come back with the result.

 

Same problem.

2019-11-27 23:31:17,250EBUG:acme.client:Storing nonce: 0002-Ef9Su7OmvfBj6ppsog-iXg36acQPkizQAgsznUuW4w
2019-11-27 23:31:17,251EBUG:certbot.reporter:Reporting to user: The following errors were reported by the server:

Domain: .........info
Type: connection
Detail: Fetching ..........info/.well-known/acme-challenge/KIiF4bGGsdhN3nYlJAodg0LgpTU618Cb_AWHm3Paatg: Timeout during connect (likely firewall problem)

Domain: ............info
Type: connection
Detail: Fetching ................info/.well-known/acme-challenge/TSXHlovUGbJ4-QQW6TI8xuihp3vmmVdiw-g_cT4a6Ss: Timeout during connect (likely firewall problem)

To fix these errors, please make sure that your domain name was entered correctly and the DNS A/AAAA record(s) for that domain contain(s) the right IP address. Additionally, please check that your computer has a publicly routable IP address and that no firewalls are preventing the server from communicating with the client. If you're using the webroot plugin, you should also verify that you are serving files from the webroot path you provided.
2019-11-27 23:31:17,255EBUG:certbot.error_handler:Encountered exception:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/certbot/auth_handler.py", line 82, in handle_authorizations
self._respond(aauthzrs, resp, best_effort)
File "/usr/lib/python3/dist-packages/certbot/auth_handler.py", line 168, in _respond
self._poll_challenges(aauthzrs, chall_update, best_effort)
File "/usr/lib/python3/dist-packages/certbot/auth_handler.py", line 239, in _poll_challenges
raise errors.FailedChallenges(all_failed_achalls)
certbot.errors.FailedChallenges: Failed authorization procedure. ..............info (http-01): urn:ietfarams:acme:error:connection :: The server could not connect to the client to verify the domain :: Fetching ................info/.well-known/acme-challenge/KIiF4bGGsdhN3nYlJAodg0LgpTU618Cb_AWHm3Paatg: Timeout during connect (likely firewall problem), .............info (http-01): urn:ietfarams:acme:error:connection :: The server could not connect to the client to verify the domain :: Fetching .................info/.well-known/acme-challenge/TSXHlovUGbJ4-QQW6TI8xuihp3vmmVdiw-g_cT4a6Ss: Timeout during connect (likely firewall problem)

2019-11-27 23:31:17,255EBUG:certbot.error_handler:Calling registered functions
2019-11-27 23:31:17,255:INFO:certbot.auth_handler:Cleaning up challenges
2019-11-27 23:31:17,255EBUG:certbot.plugins.webroot:Removing /usr/local/ispconfig/interface/acme/.well-known/acme-challenge/KIiF4bGGsdhN3nYlJAodg0LgpTU618Cb_AWHm3Paatg
2019-11-27 23:31:17,256EBUG:certbot.plugins.webroot:Removing /usr/local/ispconfig/interface/acme/.well-known/acme-challenge/TSXHlovUGbJ4-QQW6TI8xuihp3vmmVdiw-g_cT4a6Ss
2019-11-27 23:31:17,256EBUG:certbot.plugins.webroot:All challenges cleaned up
2019-11-27 23:31:17,256EBUG:certbot.log:Exiting abnormally:
Traceback (most recent call last):
File "/usr/bin/letsencrypt", line 11, in <module>
load_entry_point('certbot==0.31.0', 'console_scripts', 'certbot')()
File "/usr/lib/python3/dist-packages/certbot/main.py", line 1365, in main
return config.func(config, plugins)
File "/usr/lib/python3/dist-packages/certbot/main.py", line 1250, in certonly
lineage = _get_and_save_cert(le_client, config, domains, certname, lineage)
File "/usr/lib/python3/dist-packages/certbot/main.py", line 121, in _get_and_save_cert
lineage = le_client.obtain_and_enroll_certificate(domains, certname)
File "/usr/lib/python3/dist-packages/certbot/client.py", line 410, in obtain_and_enroll_certificate
cert, chain, key, _ = self.obtain_certificate(domains)
File "/usr/lib/python3/dist-packages/certbot/client.py", line 353, in obtain_certificate
orderr = self._get_order_and_authorizations(csr.data, self.config.allow_subset_of_names)
File "/usr/lib/python3/dist-packages/certbot/client.py", line 389, in _get_order_and_authorizations
authzr = self.auth_handler.handle_authorizations(orderr, best_effort)
File "/usr/lib/python3/dist-packages/certbot/auth_handler.py", line 82, in handle_authorizations
self._respond(aauthzrs, resp, best_effort)
File "/usr/lib/python3/dist-packages/certbot/auth_handler.py", line 168, in _respond
self._poll_challenges(aauthzrs, chall_update, best_effort)
File "/usr/lib/python3/dist-packages/certbot/auth_handler.py", line 239, in _poll_challenges
raise errors.FailedChallenges(all_failed_achalls)
certbot.errors.FailedChallenges: Failed authorization procedure. ...........info (http-01): urn:ietfarams:acme:error:connection :: The server could not connect to the client to verify the domain :: Fetching ...............info/.well-known/acme-challenge/KIiF4bGGsdhN3nYlJAodg0LgpTU618Cb_AWHm3Paatg: Timeout during connect (likely firewall problem), ...............info (http-01): urn:ietfarams:acme:error:connection :: The server could not connect to the client to verify the domain :: Fetching ............info/.well-known/acme-challenge/TSXHlovUGbJ4-QQW6TI8xuihp3vmmVdiw-g_cT4a6Ss: Timeout during connect (likely firewall problem)
2019-11-27 23:31:17,689EBUG:certbot.main:certbot version: 0.31.0
2019-11-27 23:31:17,690EBUG:certbot.main:Arguments: ['--domains', 'realestateny.info', '--domains', '..............info']
2019-11-27 23:31:17,690EBUG:certbot.mainiscovered plugins: PluginsRegistry(PluginEntryPoint#manual,PluginEntryPoint#null,PluginEntryPoint#standalone,PluginEntryPoint#webroot)
2019-11-27 23:31:17,698EBUG:certbot.log:Root logging level set at 20
2019-11-27 23:31:17,698:INFO:certbot.log:Saving debug log to /var/log/letsencrypt/letsencrypt.log

 

I tested your real.... domain in browser from here, it does not get answer and timeouts. I wrote about this in #15.

 

My IP was part of a class of IPs that was filtered. The internet provider changed my IP. Now it should be all right. Thank you for your support.