Can't start Nginx - Job for nginx.service failed

Hello,

This is my fist droplet and I’ve followed all the steps for the initial server setup with Ubuntu, how to setup a firewall with ufw, I’ve installed Nginx and it worked. Then I’ve installed MariaDb and started it, everything was ok, and after I’ve installed PHP I’ve followed “Step Four — Configure Nginx to Use our PHP Processor” from here: https://www.digitalocean.com/community/tutorials/how-to-install-linux-nginx-mysql-php-lemp-stack-on-ubuntu-14-04 (although I have Ubuntu 15.04 x64 on my droplet) Did “sudo nano /etc/nginx/sites-available/default” and put the same setup it is in their example, but after “sudo service nginx restart” couldn’t restart the Nginx, I’m getting:

myusername@droplet1:~$ sudo service nginx restart
Job for nginx.service failed. See "systemctl status nginx.service" and "journalctl -xe" for details.
myusername@droplet1:~$ systemctl status nginx.service
● 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 2015-08-12 20:16:25 CEST; 23s ago
  Process: 24221 ExecStartPre=/usr/sbin/nginx -t -q -g daemon on; master_process on; (code=exited, status=1/FAILURE)
 Main PID: 17425 (code=exited, status=0/SUCCESS)
myusername@droplet1:~$ journalctl -xe
Hint: You are currently not seeing messages from other users and the system.
      Users in the 'systemd-journal' group can see all messages. Pass -q to
      turn off this notice.
--
-- The start-up result is done.
Aug 12 18:43:25 droplet1.mysite.com systemd[15692]: Starting Shutdown.
-- Subject: Unit UNIT has begun start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit UNIT has begun starting up.
Aug 12 18:43:25 droplet1.mysite.com systemd[15692]: Starting Exit the Session..
-- Subject: Unit UNIT has begun start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit UNIT has begun starting up.
Aug 12 18:43:25 droplet1.mysite.com systemd[15692]: Received SIGRTMIN+24 from P
Aug 12 18:43:34 droplet1.mysite.com systemd[16747]: Trying to run as user insta
Aug 12 18:43:34 droplet1.mysite.com systemd[16748]: pam_unix(systemd-user:sessi
Aug 12 18:46:06 droplet1.mysite.com sudo[16790]: pam_unix(sudo:auth): authentic
Aug 12 19:40:45 droplet1.mysite.com systemd[21873]: Trying to run as user insta
Aug 12 19:41:20 droplet1.mysite.com sudo[21907]: pam_unix(sudo:auth): authentic
Aug 12 20:04:23 droplet1.mysite.com systemd[24038]: Trying to run as user insta
Aug 12 20:09:59 droplet1.mysite.com systemd[24109]: Trying to run as user insta
Aug 12 20:15:47 droplet1.mysite.com systemd[24180]: Trying to run as user insta
lines 1142-1164/1164 (END)

Anyone have an idea about what happens?

Thanks!