package:nginx-light:1.10.3-1ubuntu3.1
Setting up nginx-light (1.10.3-1ubuntu3.1) ...
Job for nginx.service failed because the control process exited with error code.
See "systemctl status nginx.service" and "journalctl -xe" for details.
invoke-rc.d: initscript nginx, action "start" failed.
● nginx.service - A high performance web server and a reverse proxy server
   Loaded: loaded (/lib/systemd/system/nginx.service; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Wed 2017-08-09 01:45:53 PDT; 30ms ago
     Docs: man:nginx(8)
  Process: 12229 ExecStart=/usr/sbin/nginx -g daemon on; master_process on; (code=exited, status=1/FAILURE)
  Process: 12226 ExecStartPre=/usr/sbin/nginx -t -q -g daemon on; master_process on; (code=exited, status=0/SUCCESS)

Aug 09 01:45:51 ubuntu nginx[12229]: nginx: [emerg] bind() to 0.0.0.0:80 fa…use)
Aug 09 01:45:51 ubuntu nginx[12229]: nginx: [emerg] bind() to 0.0.0.0:80 fa…use)
Aug 09 01:45:52 ubuntu nginx[12229]: nginx: [emerg] bind() to 0.0.0.0:80 fa…use)
Aug 09 01:45:52 ubuntu nginx[12229]: nginx: [emerg] bind() to 0.0.0.0:80 fa…use)
Aug 09 01:45:53 ubuntu nginx[12229]: nginx: [emerg] bind() to 0.0.0.0:80 fa…use)
Aug 09 01:45:53 ubuntu nginx[12229]: nginx: [emerg] still could not bind()
Aug 09 01:45:53 ubuntu systemd[1]: nginx.service: Control process exited, c…us=1
Aug 09 01:45:53 ubuntu systemd[1]: Failed to start A high performance web s…ver.
Aug 09 01:45:53 ubuntu systemd[1]: nginx.service: Unit entered failed state.
Aug 09 01:45:53 ubuntu systemd[1]: nginx.service: Failed with result 'exit-…de'.
Hint: Some lines were ellipsized, use -l to show in full.
dpkg: error processing package nginx-light (--configure):
 subprocess installed post-installation script returned error exit status 1