The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Thu Feb  7 00:04:11 2019 from host-249-159-66-217.spbmts.ru
root@vm136837:~# a2ensite klast.info                                      Site klast.info already enabled
root@vm136837:~# service apache2 reload                                   Job for apache2.service failed. See 'systemctl status apache2.service' and 'journalctl -xn' for details.
root@vm136837:~# systemctl status apache2.service -l                      ● apache2.service - LSB: Apache2 web server
   Loaded: loaded (/etc/init.d/apache2)
  Drop-In: /lib/systemd/system/apache2.service.d
           └─forking.conf
   Active: failed (Result: exit-code) since Wed 2019-02-06 20:02:01 MSK; 12h ago
  Process: 17102 ExecStop=/etc/init.d/apache2 stop (code=exited, status=0/SUCCESS)
  Process: 17083 ExecReload=/etc/init.d/apache2 reload (code=exited, status=1/FAILURE)
  Process: 24223 ExecStart=/etc/init.d/apache2 start (code=exited, status=1/FAILURE)

Feb 06 20:02:01 vm136837.local apache2[24223]: AH00112: Warning: DocumentRoot [/var/www/html] does not exist
Feb 06 20:02:01 vm136837.local apache2[24223]: AH00526: Syntax error on line 3 of /etc/apache2/sites-enabled/klast.info.conf:
Feb 06 20:02:01 vm136837.local apache2[24223]: ServerAlias only used in <VirtualHost>
Feb 06 20:02:01 vm136837.local apache2[24223]: Action 'configtest' failed.Feb 06 20:02:01 vm136837.local apache2[24223]: The Apache error log may have more information.
Feb 06 20:02:01 vm136837.local systemd[1]: apache2.service: control process exited, code=exited status=1
Feb 06 20:02:01 vm136837.local systemd[1]: Failed to start LSB: Apache2 web server.
Feb 06 20:02:01 vm136837.local systemd[1]: Unit apache2.service entered failed state.
Feb 07 00:07:38 vm136837.local systemd[1]: Unit apache2.service cannot be reloaded because it is inactive.
Feb 07 08:58:10 vm136837.local systemd[1]: Unit apache2.service cannot be reloaded because it is inactive.
root@vm136837:~#