[GH-ISSUE #413] lets encrypt "internal error" / connectivity issue? #348

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Closed

opened 2026-02-26 06:32:29 +03:00 by kerem · 1 comment

kerem commented

2026-02-26 06:32:29 +03:00

Owner

Originally created by @anthonymobile on GitHub (May 19, 2020).
Original GitHub issue: https://github.com/NginxProxyManager/nginx-proxy-manager/issues/413

after a flawless working install i started having problems a few weeks ago with adding new proxy hosts getting the "internal error" popup. i ignored it. then i noticed others reporting it, so wondering if this is related to #396.

after trying clean installs (blow away all images, containers and config) and even installing older images from a month or so ago still can't avoid the dreaded "internal error"

the one variable has been the addition of a pihole on my network. but i've removed that entirely and reset the DNS pointer on my router and still same behavior.

this -looks- like a connectivity error and normally i would not file a bug report, but nothing has changed on my setup (except the pihole which i removed). if it obviously is please close and i'll continue troubleshooting.

Describe the bug

adding a proxy host (force SSL, get a new cert from lets encrypt) results in "internal error" popup box
v2.2.3 nginxproxymanager

To Reproduce
Steps to reproduce the behavior:

Go to admin
Click on 'hosts' 'proxy hosts' 'add proxy host'
Enter domain name, http, ip, port (proxy.domain.com, 192.168.1.85, 81) <- lets strt with the proxy admin itself
click 'SSL' tab
'click SSL cert 'request new with let's encrypt'
chechk 'force SSL' and 'i agree' and enter your email and 'save'
30 seconds wait and 'Internal Error' box pops up.

[5/19/2020] [3:18:09 PM] [Nginx    ] › ℹ  info      Reloading Nginx
[5/19/2020] [3:18:09 PM] [SSL      ] › ℹ  info      Requesting Let'sEncrypt certificates for Cert #1: proxy.bitsandatoms.net
[5/19/2020] [3:18:14 PM] [Nginx    ] › ℹ  info      Reloading Nginx
[5/19/2020] [3:18:14 PM] [Express  ] › ⚠  warning   Command failed: /usr/bin/certbot certonly --non-interactive --config "/etc/letsencrypt.ini" --cert-name "npm-1" --agree-tos --email "anthony@starcitygroup.us" --preferred-challenges "dns,http" --webroot --domains "proxy.bitsandatoms.net" 
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator webroot, Installer None
An unexpected error occurred:
Traceback (most recent call last):
  File "/usr/lib/python3.8/site-packages/urllib3/connection.py", line 156, in _new_conn
    conn = connection.create_connection(
  File "/usr/lib/python3.8/site-packages/urllib3/util/connection.py", line 61, in create_connection
    for res in socket.getaddrinfo(host, port, family, socket.SOCK_STREAM):
  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] Try again
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
  File "/usr/lib/python3.8/site-packages/urllib3/connectionpool.py", line 665, in urlopen
    httplib_response = self._make_request(
  File "/usr/lib/python3.8/site-packages/urllib3/connectionpool.py", line 376, in _make_request
    self._validate_conn(conn)
  File "/usr/lib/python3.8/site-packages/urllib3/connectionpool.py", line 994, in _validate_conn
    conn.connect()
  File "/usr/lib/python3.8/site-packages/urllib3/connection.py", line 334, in connect
    conn = self._new_conn()
  File "/usr/lib/python3.8/site-packages/urllib3/connection.py", line 168, in _new_conn
    raise NewConnectionError(
urllib3.exceptions.NewConnectionError: <urllib3.connection.VerifiedHTTPSConnection object at 0x7fbc604bfb20>: Failed to establish a new connection: [Errno -3] Try again
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
  File "/usr/lib/python3.8/site-packages/requests/adapters.py", line 439, in send
    resp = conn.urlopen(
  File "/usr/lib/python3.8/site-packages/urllib3/connectionpool.py", line 719, in urlopen
    retries = retries.increment(
  File "/usr/lib/python3.8/site-packages/urllib3/util/retry.py", line 436, in increment
    raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='acme-v02.api.letsencrypt.org', port=443): Max retries exceeded with url: /directory (Caused by NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x7fbc604bfb20>: Failed to establish a new connection: [Errno -3] Try again'))
During handling of the above exception, another exception occurred:
requests.exceptions.ConnectionError: HTTPSConnectionPool(host='acme-v02.api.letsencrypt.org', port=443): Max retries exceeded with url: /directory (Caused by NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x7fbc604bfb20>: Failed to establish a new connection: [Errno -3] Try again'))
Please see the logfiles in /var/log/letsencrypt for more details.

/var/log/letsencrypt.log

2020-05-19 15:40:02,609:DEBUG:certbot._internal.main:certbot version: 1.0.0
2020-05-19 15:40:02,609:DEBUG:certbot._internal.main:Arguments: ['--non-interactive', '--config', '/etc/letsencrypt.ini', '--cert-name', 'npm-2', '--agree-tos', '--email', 'anthony@starcitygroup.us', '--preferred-challenges', 'dns,http', '--webroot', '--domains', 'proxy.bitsandatoms.net']
2020-05-19 15:40:02,609:DEBUG:certbot._internal.main:Discovered plugins: PluginsRegistry(PluginEntryPoint#manual,PluginEntryPoint#null,PluginEntryPoint#standalone,PluginEntryPoint#webroot)
2020-05-19 15:40:02,623:DEBUG:certbot._internal.log:Root logging level set at 20
2020-05-19 15:40:02,623:INFO:certbot._internal.log:Saving debug log to /var/log/letsencrypt/letsencrypt.log
2020-05-19 15:40:02,624:DEBUG:certbot._internal.plugins.selection:Requested authenticator webroot and installer None
2020-05-19 15:40:02,627:DEBUG:certbot._internal.plugins.selection:Single candidate plugin: * webroot
Description: Place files in webroot directory
Interfaces: IAuthenticator, IPlugin
Entry point: webroot = certbot._internal.plugins.webroot:Authenticator
Initialized: <certbot._internal.plugins.webroot.Authenticator object at 0x7fbe07c22af0>
Prep: True
2020-05-19 15:40:02,627:DEBUG:certbot._internal.plugins.selection:Selected authenticator <certbot._internal.plugins.webroot.Authenticator object at 0x7fbe07c22af0> and installer None
2020-05-19 15:40:02,628:INFO:certbot._internal.plugins.selection:Plugins selected: Authenticator webroot, Installer None
2020-05-19 15:40:02,667:DEBUG:acme.client:Sending GET request to https://acme-v02.api.letsencrypt.org/directory.
2020-05-19 15:40:02,668:DEBUG:urllib3.connectionpool:Starting new HTTPS connection (1): acme-v02.api.letsencrypt.org:443
2020-05-19 15:40:07,674:DEBUG:certbot._internal.log:Exiting abnormally:
Traceback (most recent call last):
  File "/usr/lib/python3.8/site-packages/urllib3/connection.py", line 156, in _new_conn
    conn = connection.create_connection(
  File "/usr/lib/python3.8/site-packages/urllib3/util/connection.py", line 61, in create_connection
    for res in socket.getaddrinfo(host, port, family, socket.SOCK_STREAM):
  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] Try again

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.8/site-packages/urllib3/connectionpool.py", line 665, in urlopen
    httplib_response = self._make_request(
  File "/usr/lib/python3.8/site-packages/urllib3/connectionpool.py", line 376, in _make_request
    self._validate_conn(conn)
  File "/usr/lib/python3.8/site-packages/urllib3/connectionpool.py", line 994, in _validate_conn
    conn.connect()
  File "/usr/lib/python3.8/site-packages/urllib3/connection.py", line 334, in connect
    conn = self._new_conn()
  File "/usr/lib/python3.8/site-packages/urllib3/connection.py", line 168, in _new_conn
    raise NewConnectionError(
urllib3.exceptions.NewConnectionError: <urllib3.connection.VerifiedHTTPSConnection object at 0x7fbe07c1a9a0>: Failed to establish a new connection: [Errno -3] Try again

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.8/site-packages/requests/adapters.py", line 439, in send
    resp = conn.urlopen(
  File "/usr/lib/python3.8/site-packages/urllib3/connectionpool.py", line 719, in urlopen
    retries = retries.increment(
  File "/usr/lib/python3.8/site-packages/urllib3/util/retry.py", line 436, in increment
    raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='acme-v02.api.letsencrypt.org', port=443): Max retries exceeded with url: /directory (Caused by NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x7fbe07c1a9a0>: Failed to establish a new connection: [Errno -3] Try again'))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/bin/certbot", line 11, in <module>
    load_entry_point('certbot==1.0.0', 'console_scripts', 'certbot')()
  File "/usr/lib/python3.8/site-packages/certbot/main.py", line 14, in main
    return internal_main.main(cli_args)
  File "/usr/lib/python3.8/site-packages/certbot/_internal/main.py", line 1350, in main
    return config.func(config, plugins)
  File "/usr/lib/python3.8/site-packages/certbot/_internal/main.py", line 1221, in certonly
    le_client = _init_le_client(config, auth, installer)
  File "/usr/lib/python3.8/site-packages/certbot/_internal/main.py", line 607, in _init_le_client
    acc, acme = _determine_account(config)
  File "/usr/lib/python3.8/site-packages/certbot/_internal/main.py", line 522, in _determine_account
    acc, acme = client.register(
  File "/usr/lib/python3.8/site-packages/certbot/_internal/client.py", line 175, in register
    acme = acme_from_config_key(config, key)
  File "/usr/lib/python3.8/site-packages/certbot/_internal/client.py", line 45, in acme_from_config_key
    return acme_client.BackwardsCompatibleClientV2(net, key, config.server)
  File "/usr/lib/python3.8/site-packages/acme/client.py", line 827, in __init__
    directory = messages.Directory.from_json(net.get(server).json())
  File "/usr/lib/python3.8/site-packages/acme/client.py", line 1158, in get
    self._send_request('GET', url, **kwargs), content_type=content_type)
  File "/usr/lib/python3.8/site-packages/acme/client.py", line 1107, in _send_request
    response = self.session.request(method, url, *args, **kwargs)
  File "/usr/lib/python3.8/site-packages/requests/sessions.py", line 533, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/lib/python3.8/site-packages/requests/sessions.py", line 646, in send
    r = adapter.send(request, **kwargs)
  File "/usr/lib/python3.8/site-packages/requests/adapters.py", line 516, in send
    raise ConnectionError(e, request=request)

      File "/usr/lib/python3.8/site-packages/certbot/main.py", line 14, in main
    return internal_main.main(cli_args)
  File "/usr/lib/python3.8/site-packages/certbot/_internal/main.py", line 1350, in main
    return config.func(config, plugins)
  File "/usr/lib/python3.8/site-packages/certbot/_internal/main.py", line 1221, in certonly
    le_client = _init_le_client(config, auth, installer)
  File "/usr/lib/python3.8/site-packages/certbot/_internal/main.py", line 607, in _init_le_client
    acc, acme = _determine_account(config)
  File "/usr/lib/python3.8/site-packages/certbot/_internal/main.py", line 522, in _determine_account
    acc, acme = client.register(
  File "/usr/lib/python3.8/site-packages/certbot/_internal/client.py", line 175, in register
    acme = acme_from_config_key(config, key)
  File "/usr/lib/python3.8/site-packages/certbot/_internal/client.py", line 45, in acme_from_config_key
    return acme_client.BackwardsCompatibleClientV2(net, key, config.server)
  File "/usr/lib/python3.8/site-packages/acme/client.py", line 827, in __init__
    directory = messages.Directory.from_json(net.get(server).json())
  File "/usr/lib/python3.8/site-packages/acme/client.py", line 1158, in get
    self._send_request('GET', url, **kwargs), content_type=content_type)
  File "/usr/lib/python3.8/site-packages/acme/client.py", line 1107, in _send_request
    response = self.session.request(method, url, *args, **kwargs)
  File "/usr/lib/python3.8/site-packages/requests/sessions.py", line 533, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/lib/python3.8/site-packages/requests/sessions.py", line 646, in send
    r = adapter.send(request, **kwargs)
  File "/usr/lib/python3.8/site-packages/requests/adapters.py", line 516, in send
    raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPSConnectionPool(host='acme-v02.api.letsencrypt.org', port=443): Max retries exceeded with url: /directory (Caused by NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x7fbe07c1a9a0>: Failed to establish a new connection: [Errno -3] Try again'))
2020-05-19 15:40:07,677:ERROR:certbot._internal.log:An unexpected error occurred:

Operating System

Ubuntu 18.04 server LTS

Originally created by @anthonymobile on GitHub (May 19, 2020). Original GitHub issue: https://github.com/NginxProxyManager/nginx-proxy-manager/issues/413 after a flawless working install i started having problems a few weeks ago with adding new proxy hosts getting the "internal error" popup. i ignored it. then i noticed others reporting it, so wondering if this is related to [#396](https://github.com/jc21/nginx-proxy-manager/issues/396). after trying clean installs (blow away all images, containers and config) and even installing older images from a month or so ago still can't avoid the dreaded "internal error" the one variable has been the addition of a pihole on my network. but i've removed that entirely and reset the DNS pointer on my router and still same behavior. this -looks- like a connectivity error and normally i would not file a bug report, but nothing has changed on my setup (except the pihole which i removed). if it obviously is please close and i'll continue troubleshooting. **Describe the bug** - adding a proxy host (force SSL, get a new cert from lets encrypt) results in "internal error" popup box - v2.2.3 nginxproxymanager **To Reproduce** Steps to reproduce the behavior: 1. Go to admin 2. Click on 'hosts' 'proxy hosts' 'add proxy host' 3. Enter domain name, http, ip, port (proxy.domain.com, 192.168.1.85, 81) <- lets strt with the proxy admin itself 4. click 'SSL' tab 5. 'click SSL cert 'request new with let's encrypt' 6. chechk 'force SSL' and 'i agree' and enter your email and 'save' 7. 30 seconds wait and 'Internal Error' box pops up. ``` [5/19/2020] [3:18:09 PM] [Nginx ] › ℹ info Reloading Nginx [5/19/2020] [3:18:09 PM] [SSL ] › ℹ info Requesting Let'sEncrypt certificates for Cert #1: proxy.bitsandatoms.net [5/19/2020] [3:18:14 PM] [Nginx ] › ℹ info Reloading Nginx [5/19/2020] [3:18:14 PM] [Express ] › ⚠ warning Command failed: /usr/bin/certbot certonly --non-interactive --config "/etc/letsencrypt.ini" --cert-name "npm-1" --agree-tos --email "anthony@starcitygroup.us" --preferred-challenges "dns,http" --webroot --domains "proxy.bitsandatoms.net" Saving debug log to /var/log/letsencrypt/letsencrypt.log Plugins selected: Authenticator webroot, Installer None An unexpected error occurred: Traceback (most recent call last): File "/usr/lib/python3.8/site-packages/urllib3/connection.py", line 156, in _new_conn conn = connection.create_connection( File "/usr/lib/python3.8/site-packages/urllib3/util/connection.py", line 61, in create_connection for res in socket.getaddrinfo(host, port, family, socket.SOCK_STREAM): 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] Try again During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/usr/lib/python3.8/site-packages/urllib3/connectionpool.py", line 665, in urlopen httplib_response = self._make_request( File "/usr/lib/python3.8/site-packages/urllib3/connectionpool.py", line 376, in _make_request self._validate_conn(conn) File "/usr/lib/python3.8/site-packages/urllib3/connectionpool.py", line 994, in _validate_conn conn.connect() File "/usr/lib/python3.8/site-packages/urllib3/connection.py", line 334, in connect conn = self._new_conn() File "/usr/lib/python3.8/site-packages/urllib3/connection.py", line 168, in _new_conn raise NewConnectionError( urllib3.exceptions.NewConnectionError: <urllib3.connection.VerifiedHTTPSConnection object at 0x7fbc604bfb20>: Failed to establish a new connection: [Errno -3] Try again During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/usr/lib/python3.8/site-packages/requests/adapters.py", line 439, in send resp = conn.urlopen( File "/usr/lib/python3.8/site-packages/urllib3/connectionpool.py", line 719, in urlopen retries = retries.increment( File "/usr/lib/python3.8/site-packages/urllib3/util/retry.py", line 436, in increment raise MaxRetryError(_pool, url, error or ResponseError(cause)) urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='acme-v02.api.letsencrypt.org', port=443): Max retries exceeded with url: /directory (Caused by NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x7fbc604bfb20>: Failed to establish a new connection: [Errno -3] Try again')) During handling of the above exception, another exception occurred: requests.exceptions.ConnectionError: HTTPSConnectionPool(host='acme-v02.api.letsencrypt.org', port=443): Max retries exceeded with url: /directory (Caused by NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x7fbc604bfb20>: Failed to establish a new connection: [Errno -3] Try again')) Please see the logfiles in /var/log/letsencrypt for more details. ``` /var/log/letsencrypt.log ``` 2020-05-19 15:40:02,609:DEBUG:certbot._internal.main:certbot version: 1.0.0 2020-05-19 15:40:02,609:DEBUG:certbot._internal.main:Arguments: ['--non-interactive', '--config', '/etc/letsencrypt.ini', '--cert-name', 'npm-2', '--agree-tos', '--email', 'anthony@starcitygroup.us', '--preferred-challenges', 'dns,http', '--webroot', '--domains', 'proxy.bitsandatoms.net'] 2020-05-19 15:40:02,609:DEBUG:certbot._internal.main:Discovered plugins: PluginsRegistry(PluginEntryPoint#manual,PluginEntryPoint#null,PluginEntryPoint#standalone,PluginEntryPoint#webroot) 2020-05-19 15:40:02,623:DEBUG:certbot._internal.log:Root logging level set at 20 2020-05-19 15:40:02,623:INFO:certbot._internal.log:Saving debug log to /var/log/letsencrypt/letsencrypt.log 2020-05-19 15:40:02,624:DEBUG:certbot._internal.plugins.selection:Requested authenticator webroot and installer None 2020-05-19 15:40:02,627:DEBUG:certbot._internal.plugins.selection:Single candidate plugin: * webroot Description: Place files in webroot directory Interfaces: IAuthenticator, IPlugin Entry point: webroot = certbot._internal.plugins.webroot:Authenticator Initialized: <certbot._internal.plugins.webroot.Authenticator object at 0x7fbe07c22af0> Prep: True 2020-05-19 15:40:02,627:DEBUG:certbot._internal.plugins.selection:Selected authenticator <certbot._internal.plugins.webroot.Authenticator object at 0x7fbe07c22af0> and installer None 2020-05-19 15:40:02,628:INFO:certbot._internal.plugins.selection:Plugins selected: Authenticator webroot, Installer None 2020-05-19 15:40:02,667:DEBUG:acme.client:Sending GET request to https://acme-v02.api.letsencrypt.org/directory. 2020-05-19 15:40:02,668:DEBUG:urllib3.connectionpool:Starting new HTTPS connection (1): acme-v02.api.letsencrypt.org:443 2020-05-19 15:40:07,674:DEBUG:certbot._internal.log:Exiting abnormally: Traceback (most recent call last): File "/usr/lib/python3.8/site-packages/urllib3/connection.py", line 156, in _new_conn conn = connection.create_connection( File "/usr/lib/python3.8/site-packages/urllib3/util/connection.py", line 61, in create_connection for res in socket.getaddrinfo(host, port, family, socket.SOCK_STREAM): 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] Try again During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/usr/lib/python3.8/site-packages/urllib3/connectionpool.py", line 665, in urlopen httplib_response = self._make_request( File "/usr/lib/python3.8/site-packages/urllib3/connectionpool.py", line 376, in _make_request self._validate_conn(conn) File "/usr/lib/python3.8/site-packages/urllib3/connectionpool.py", line 994, in _validate_conn conn.connect() File "/usr/lib/python3.8/site-packages/urllib3/connection.py", line 334, in connect conn = self._new_conn() File "/usr/lib/python3.8/site-packages/urllib3/connection.py", line 168, in _new_conn raise NewConnectionError( urllib3.exceptions.NewConnectionError: <urllib3.connection.VerifiedHTTPSConnection object at 0x7fbe07c1a9a0>: Failed to establish a new connection: [Errno -3] Try again During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/usr/lib/python3.8/site-packages/requests/adapters.py", line 439, in send resp = conn.urlopen( File "/usr/lib/python3.8/site-packages/urllib3/connectionpool.py", line 719, in urlopen retries = retries.increment( File "/usr/lib/python3.8/site-packages/urllib3/util/retry.py", line 436, in increment raise MaxRetryError(_pool, url, error or ResponseError(cause)) urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='acme-v02.api.letsencrypt.org', port=443): Max retries exceeded with url: /directory (Caused by NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x7fbe07c1a9a0>: Failed to establish a new connection: [Errno -3] Try again')) During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/usr/bin/certbot", line 11, in <module> load_entry_point('certbot==1.0.0', 'console_scripts', 'certbot')() File "/usr/lib/python3.8/site-packages/certbot/main.py", line 14, in main return internal_main.main(cli_args) File "/usr/lib/python3.8/site-packages/certbot/_internal/main.py", line 1350, in main return config.func(config, plugins) File "/usr/lib/python3.8/site-packages/certbot/_internal/main.py", line 1221, in certonly le_client = _init_le_client(config, auth, installer) File "/usr/lib/python3.8/site-packages/certbot/_internal/main.py", line 607, in _init_le_client acc, acme = _determine_account(config) File "/usr/lib/python3.8/site-packages/certbot/_internal/main.py", line 522, in _determine_account acc, acme = client.register( File "/usr/lib/python3.8/site-packages/certbot/_internal/client.py", line 175, in register acme = acme_from_config_key(config, key) File "/usr/lib/python3.8/site-packages/certbot/_internal/client.py", line 45, in acme_from_config_key return acme_client.BackwardsCompatibleClientV2(net, key, config.server) File "/usr/lib/python3.8/site-packages/acme/client.py", line 827, in __init__ directory = messages.Directory.from_json(net.get(server).json()) File "/usr/lib/python3.8/site-packages/acme/client.py", line 1158, in get self._send_request('GET', url, **kwargs), content_type=content_type) File "/usr/lib/python3.8/site-packages/acme/client.py", line 1107, in _send_request response = self.session.request(method, url, *args, **kwargs) File "/usr/lib/python3.8/site-packages/requests/sessions.py", line 533, in request resp = self.send(prep, **send_kwargs) File "/usr/lib/python3.8/site-packages/requests/sessions.py", line 646, in send r = adapter.send(request, **kwargs) File "/usr/lib/python3.8/site-packages/requests/adapters.py", line 516, in send raise ConnectionError(e, request=request) File "/usr/lib/python3.8/site-packages/certbot/main.py", line 14, in main return internal_main.main(cli_args) File "/usr/lib/python3.8/site-packages/certbot/_internal/main.py", line 1350, in main return config.func(config, plugins) File "/usr/lib/python3.8/site-packages/certbot/_internal/main.py", line 1221, in certonly le_client = _init_le_client(config, auth, installer) File "/usr/lib/python3.8/site-packages/certbot/_internal/main.py", line 607, in _init_le_client acc, acme = _determine_account(config) File "/usr/lib/python3.8/site-packages/certbot/_internal/main.py", line 522, in _determine_account acc, acme = client.register( File "/usr/lib/python3.8/site-packages/certbot/_internal/client.py", line 175, in register acme = acme_from_config_key(config, key) File "/usr/lib/python3.8/site-packages/certbot/_internal/client.py", line 45, in acme_from_config_key return acme_client.BackwardsCompatibleClientV2(net, key, config.server) File "/usr/lib/python3.8/site-packages/acme/client.py", line 827, in __init__ directory = messages.Directory.from_json(net.get(server).json()) File "/usr/lib/python3.8/site-packages/acme/client.py", line 1158, in get self._send_request('GET', url, **kwargs), content_type=content_type) File "/usr/lib/python3.8/site-packages/acme/client.py", line 1107, in _send_request response = self.session.request(method, url, *args, **kwargs) File "/usr/lib/python3.8/site-packages/requests/sessions.py", line 533, in request resp = self.send(prep, **send_kwargs) File "/usr/lib/python3.8/site-packages/requests/sessions.py", line 646, in send r = adapter.send(request, **kwargs) File "/usr/lib/python3.8/site-packages/requests/adapters.py", line 516, in send raise ConnectionError(e, request=request) requests.exceptions.ConnectionError: HTTPSConnectionPool(host='acme-v02.api.letsencrypt.org', port=443): Max retries exceeded with url: /directory (Caused by NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x7fbe07c1a9a0>: Failed to establish a new connection: [Errno -3] Try again')) 2020-05-19 15:40:07,677:ERROR:certbot._internal.log:An unexpected error occurred: ``` **Operating System** - Ubuntu 18.04 server LTS