Osiris, thank you for answering. The contents of that file are:
2016-08-17 18:50:44,316:DEBUG:certbot.main:Root logging level set at 30
2016-08-17 18:50:44,317:INFO:certbot.main:Saving debug log to /var/log/letsencrypt/letsencrypt.log
2016-08-17 18:50:44,317:DEBUG:certbot.main:certbot version: 0.8.1
2016-08-17 18:50:44,317:DEBUG:certbot.main:Arguments: ['--apache', '-d', 'balnium.com', '-d', 'www.balnium.com', '-d', 'mail.balnium.com']
2016-08-17 18:50:44,317:DEBUG:certbot.main:Discovered plugins: PluginsRegistry(PluginEntryPoint#apache,PluginEntryPoint#webroot,PluginEntryPoint#null,PluginEntryPoint#manual,PluginEntryPoint#standalone)
2016-08-17 18:50:44,328:DEBUG:certbot.plugins.selection:Requested authenticator apache and installer apache
2016-08-17 18:50:44,360:DEBUG:certbot.plugins.disco:No installation (PluginEntryPoint#apache):
Traceback (most recent call last):
File "/root/.local/share/letsencrypt/lib/python2.7/site-packages/certbot/plugins/disco.py", line 105, in prepare
self._initialized.prepare()
File "/root/.local/share/letsencrypt/lib/python2.7/site-packages/certbot_apache/configurator.py", line 161, in prepare
raise errors.NoInstallationError
NoInstallationError
2016-08-17 18:50:44,362:DEBUG:certbot.plugins.selection:No candidate plugin
2016-08-17 18:50:44,362:DEBUG:certbot.plugins.selection:Selected authenticator None and installer None
Thanks