Lets Encrypt error with ubuntu 16.04

Hello, I’m newbie and I’m trying to use letsencrypt on my site following this tutorial https://www.digitalocean.com/community/tutorials/how-to-secure-apache-with-let-s-encrypt-on-ubuntu-16-04 but it gives the following error below. Can someone help me…

Error while running apache2ctl graceful. httpd not running, trying to start Action ‘graceful’ failed. The Apache error log may have more information.

AH00112: Warning: DocumentRoot [/var/lib/letsencrypt/tls_sni_01_page/] does not exist AH00112: Warning: DocumentRoot [/var/lib/letsencrypt/tls_sni_01_page/] does not exist AH00558: apache2: Could not reliably determine the server’s fully qualified doma in name, using 127.0.1.1. Set the ‘ServerName’ directive globally to suppress th is message (98)Address already in use: AH00072: make_sock: could not bind to address [::]:8 0 (98)Address already in use: AH00072: make_sock: could not bind to address 0.0.0. 0:80 no listening sockets available, shutting down AH00015: Unable to open logs

Cleaning up challenges Error while running apache2ctl graceful. httpd not running, trying to start Action ‘graceful’ failed. The Apache error log may have more information.

AH00558: apache2: Could not reliably determine the server’s fully qualified doma in name, using 127.0.1.1. Set the ‘ServerName’ directive globally to suppress th is message (98)Address already in use: AH00072: make_sock: could not bind to address [::]:8 0 (98)Address already in use: AH00072: make_sock: could not bind to address 0.0.0. 0:80 no listening sockets available, shutting down AH00015: Unable to open logs

Encountered exception during recovery Error while running apache2ctl graceful. httpd not running, trying to start Action ‘graceful’ failed. The Apache error log may have more information.

AH00558: apache2: Could not reliably determine the server’s fully qualified doma in name, using 127.0.1.1. Set the ‘ServerName’ directive globally to suppress th is message (98)Address already in use: AH00072: make_sock: could not bind to address [::]:8 0 (98)Address already in use: AH00072: make_sock: could not bind to address 0.0.0. 0:80 no listening sockets available, shutting down AH00015: Unable to open logs Traceback (most recent call last): File “/usr/lib/python2.7/dist-packages/certbot/error_handler.py”, line 99, in _call_registered self.funcs-1 File “/usr/lib/python2.7/dist-packages/certbot/auth_handler.py”, line 284, in _cleanup_challenges self.auth.cleanup(achalls) File “/usr/lib/python2.7/dist-packages/certbot_apache/configurator.py”, line 1 908, in cleanup self.restart() File “/usr/lib/python2.7/dist-packages/certbot_apache/configurator.py”, line 1 797, in restart self._reload() File “/usr/lib/python2.7/dist-packages/certbot_apache/configurator.py”, line 1 808, in _reload raise errors.MisconfigurationError(str(err)) MisconfigurationError: Error while running apache2ctl graceful. httpd not running, trying to start Action ‘graceful’ failed. The Apache error log may have more information.

AH00558: apache2: Could not reliably determine the server’s fully qualified doma in name, using 127.0.1.1. Set the ‘ServerName’ directive globally to suppress th is message (98)Address already in use: AH00072: make_sock: could not bind to address [::]:8 0 (98)Address already in use: AH00072: make_sock: could not bind to address 0.0.0. 0:80 no listening sockets available, shutting down AH00015: Unable to open logs