Apache服务器不工作(ubuntu 16.04，灯服务器)

sudo /etc/init.d/apache2 restart
     [....] Restarting apache2 (via systemctl): apache2.serviceJob for    
     apache2.service failed because the control process exited with error   
     code. See "systemctl status apache2.service" and "journalctl -xe" for 
     details.
     failed!
     techadon@techadon-M68MT-D3:~$ sudo systemctl status apache2.service
apache2.service - LSB: Apache2 web server
     Loaded: loaded (/etc/init.d/apache2; bad; vendor preset: enabled)
     Drop-In: /lib/systemd/system/apache2.service.d
           └─apache2-systemd.conf
     Active: failed (Result: exit-code) since Sat 2016-10-01 11:48:31 SAST;  
     1min 3
     Docs: man:systemd-sysv-generator(8)
     Process: 4128 ExecStop=/etc/init.d/apache2 stop (code=exited, 
     status=0/SUCCESS
     Process: 636 ExecReload=/etc/init.d/apache2 reload (code=exited, 
     status=0/SUCC
     Process: 4154 ExecStart=/etc/init.d/apache2 start (code=exited,   
     status=1/FAILU
Oct 01 11:48:31 techadon-M68MT-D3 apache2[4154]:  *
Oct 01 11:48:31 techadon-M68MT-D3 apache2[4154]:  * The apache2 configtest faile
Oct 01 11:48:31 techadon-M68MT-D3 apache2[4154]: Output of config test was:
Oct 01 11:48:31 techadon-M68MT-D3 apache2[4154]: apache2: Syntax error on line 2
Oct 01 11:48:31 techadon-M68MT-D3 apache2[4154]: Action 'configtest' failed.
Oct 01 11:48:31 techadon-M68MT-D3 apache2[4154]: The Apache error log may have m
Oct 01 11:48:31 techadon-M68MT-D3 systemd[1]: apache2.service: Control process e
Oct 01 11:48:31 techadon-M68MT-D3 systemd[1]: Failed to start LSB: Apache2 web s
Oct 01 11:48:31 techadon-M68MT-D3 systemd[1]: apache2.service: Unit entered fail
Oct 01 11:48:31 techadon-M68MT-D3 systemd[1]: apache2.service: Failed with resul
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