2018-09-16 08:47:04,479:DEBUG:certbot.main:certbot version: 0.27.1
2018-09-16 08:47:04,479:DEBUG:certbot.main:Arguments: ['--nginx']
2018-09-16 08:47:04,479:DEBUG:certbot.main:Discovered plugins: PluginsRegistry(PluginEntryPoint#apache,PluginEntryPoint#manual,PluginEntryPoint#nginx,PluginEntryPoint#null,PluginEntryPoint#standalone,PluginEntryPoint#webroot)
2018-09-16 08:47:04,493:DEBUG:certbot.log:Root logging level set at 20
2018-09-16 08:47:04,493:INFO:certbot.log:Saving debug log to /var/log/letsencrypt/letsencrypt.log
2018-09-16 08:47:04,496:DEBUG:certbot.plugins.selection:Requested authenticator nginx and installer nginx
2018-09-16 08:47:04,503:DEBUG:certbot.plugins.disco:No installation (PluginEntryPoint#nginx):
Traceback (most recent call last):
  File "/opt/eff.org/certbot/venv/local/lib/python2.7/site-packages/certbot/plugins/disco.py", line 132, in prepare
    self._initialized.prepare()
  File "/opt/eff.org/certbot/venv/local/lib/python2.7/site-packages/certbot_nginx/configurator.py", line 139, in prepare
    raise errors.NoInstallationError
NoInstallationError
2018-09-16 08:47:04,505:DEBUG:certbot.plugins.selection:No candidate plugin
2018-09-16 08:47:04,506:DEBUG:certbot.plugins.selection:No candidate plugin
2018-09-16 08:47:04,506:DEBUG:certbot.plugins.selection:Selected authenticator None and installer None
2018-09-16 08:47:04,507:INFO:certbot.main:Could not choose appropriate plugin: The nginx plugin is not working; there may be problems with your existing configuration.
The error was: NoInstallationError()
2018-09-16 08:47:04,507:DEBUG:certbot.log:Exiting abnormally:
Traceback (most recent call last):
  File "/opt/eff.org/certbot/venv/bin/letsencrypt", line 11, in <module>
    sys.exit(main())
  File "/opt/eff.org/certbot/venv/local/lib/python2.7/site-packages/certbot/main.py", line 1364, in main
    return config.func(config, plugins)
  File "/opt/eff.org/certbot/venv/local/lib/python2.7/site-packages/certbot/main.py", line 1233, in certonly
    installer, auth = plug_sel.choose_configurator_plugins(config, plugins, "certonly")
  File "/opt/eff.org/certbot/venv/local/lib/python2.7/site-packages/certbot/plugins/selection.py", line 237, in choose_configurator_plugins
    diagnose_configurator_problem("authenticator", req_auth, plugins)
  File "/opt/eff.org/certbot/venv/local/lib/python2.7/site-packages/certbot/plugins/selection.py", line 341, in diagnose_configurator_problem
    raise errors.PluginSelectionError(msg)
PluginSelectionError: The nginx plugin is not working; there may be problems with your existing configuration.
The error was: NoInstallationError()
2018-09-16 08:48:03,723:DEBUG:certbot.main:certbot version: 0.27.1
2018-09-16 08:48:03,724:DEBUG:certbot.main:Arguments: ['--nginx']
2018-09-16 08:48:03,724:DEBUG:certbot.main:Discovered plugins: PluginsRegistry(PluginEntryPoint#apache,PluginEntryPoint#manual,PluginEntryPoint#nginx,PluginEntryPoint#null,PluginEntryPoint#standalone,PluginEntryPoint#webroot)
2018-09-16 08:48:03,736:DEBUG:certbot.log:Root logging level set at 20
2018-09-16 08:48:03,737:INFO:certbot.log:Saving debug log to /var/log/letsencrypt/letsencrypt.log
2018-09-16 08:48:03,737:DEBUG:certbot.plugins.selection:Requested authenticator nginx and installer nginx
2018-09-16 08:48:03,743:DEBUG:certbot.plugins.disco:No installation (PluginEntryPoint#nginx):
Traceback (most recent call last):
  File "/opt/eff.org/certbot/venv/local/lib/python2.7/site-packages/certbot/plugins/disco.py", line 132, in prepare
    self._initialized.prepare()
  File "/opt/eff.org/certbot/venv/local/lib/python2.7/site-packages/certbot_nginx/configurator.py", line 139, in prepare
    raise errors.NoInstallationError
NoInstallationError
2018-09-16 08:48:03,746:DEBUG:certbot.plugins.selection:No candidate plugin
2018-09-16 08:48:03,746:DEBUG:certbot.plugins.selection:No candidate plugin
2018-09-16 08:48:03,746:DEBUG:certbot.plugins.selection:Selected authenticator None and installer None
2018-09-16 08:48:03,746:INFO:certbot.main:Could not choose appropriate plugin: The nginx plugin is not working; there may be problems with your existing configuration.
The error was: NoInstallationError()
2018-09-16 08:48:03,747:DEBUG:certbot.log:Exiting abnormally:
Traceback (most recent call last):
  File "/opt/eff.org/certbot/venv/bin/letsencrypt", line 11, in <module>
    sys.exit(main())
  File "/opt/eff.org/certbot/venv/local/lib/python2.7/site-packages/certbot/main.py", line 1364, in main
    return config.func(config, plugins)
  File "/opt/eff.org/certbot/venv/local/lib/python2.7/site-packages/certbot/main.py", line 1233, in certonly
    installer, auth = plug_sel.choose_configurator_plugins(config, plugins, "certonly")