gistfile1.txt

root@dsp:~# service tomcat7 restart
 * Starting Tomcat servlet engine tomcat7                                  [fail]
root@dsp:~# service apache2 restart
 * Restarting web server apache2                                           [fail]
 * The apache2 configtest failed.
Output of config test was:
AH00526: Syntax error on line 31 of /etc/apache2/sites-enabled/000-default.conf:
Invalid command 'ProxyPreserveHost', perhaps misspelled or defined by a module not included in the server configuration
Action 'configtest' failed.
The Apache error log may have more information.