Centos: VSFTPD not Starting

I have a minimal install of Centos in VirtualBox. I want to run a ftp service to share files between the host and my VM, and then learn about ftp servers. I installed vsftpd and changed the vsftpd.conf file as bellow: anonymous_enable=NO local_enable=YES write_enable=YES local_umask=O22 dirmessage_enable=YES xferlog_enable=YES connect_from_port 2O=YES xferlog_std format=YES chroot_local_user=YES listen_ipv6=YES pam_service_name=vsftpd userlist_enable=YES tcp_wrappers=YES But, when I type service vsftpd start I get the following error: > _Job for vsftpd.service failed because the control process exited with error code. See "systemctl status vsftpd.service" and "journalctl -xe" for details._ Is this issue happening due of a wrong config as showed above, or is it something else? What can I do to start my ftp server? **EDIT** Output of systemctl status -l vsftpd.service [user@localhost vsftpd]$ systemctl status -l vsftpd.service vsftpd.service - Vsftpd ftp daemon Loaded: loaded (/usr/lib/systemd/system/vsftpd.service, disabled; vendor preset: disabled) Active: failed (Result: exit-code) since Ter 2017-05-09 21:03:19 -03; 3min 2s ago Process: 3047 ExecStart=/usr/sbin/vsftpd /etc/vsftpd/vsftpd.conf (code=exited status=2) Mai 09 21:03:19 localhost.localdomain systemd: Starting Vsftpd ftp daemon... Mai 09 21:03:19 localhost.localdomain systemd: vsftpd.service: control process exited, code=exited status=2 Mai 09 21:03:19 localhost.localdomain systemd: Failed to start Vsftpd ftp daemon. Mai 09 21:03:19 localhost.localdomain systemd: Unit vsftpd.service entered failed state. Mai 09 21:03:19 localhost.localdomain systemd: vsftpd.service failed. [user@localhost vsftpd]$