OpenVPN won't start?

Question

openvpn

openvpn status
[email protected] - OpenVPN connection to server
Loaded: loaded (/lib/systemd/system/[email protected]; enabled; vendor preset:
enabled)
Active: failed (Result: exit-code) since Sun 2018-10 -28 13:05:55 UTC
; 42s ago
Docs: man:openvpn(8)
https://community.openvpn.net/openvpn/wiki/Openvpn...
https://community.openvpn.net/openvpn/wiki/HOWTO
Process: 1869 ExecStart=/usr /sbin/openvpn --daemon ovpn-server --status /run/o
penvpn/server.status 10 --cd /etc/openvpn --config /etc/openvpn/server.conf --wr
itepid /run/openvpn/ server.pid (code=exited, status=1/FAILURE)
Oct 28 13:05:55 vps21426nl systemd[1]: Starting OpenVPN connection to server...
Oct 28 13:05:55 vps21426nl ovpn-server[1869]: OpenVPN 2.4.0 x86_64-pc-li
nux-gnu [SSL (OpenSSL)] [LZO] [LZ4] [EPOLL] [PKCS11] [MH/PKTINFO] [AEAD] built
on n Jul 18 2017
Oct 28 13:05:55 vps21426nl ovpn-server[1869]: library versions: OpenSSL
1.0.2l 25 May 2017, LZO 2.08
Oct 28 13:05:55 vps21426nl ovpn-server[1869 ]: daemon() failed or unsuppo
rted: Resource temporarily unavailable (errno=11)
Oct 28 13:05:55 vps21426nl ovpn-server[1869]: Exiting due to fatal error
Oct 28 13:05:55 vps21426nl systemd[1] : [email protected]: Control p
rocess exited, code=exited status=1
Oct 28 13:05:55 vps21426nl systemd[1]: Failed to start OpenVPN connectio
n to server.
Oct 28 13:05:55 vps21426nl systemd[1]: [email protected]: Unit ente
red failed state.
Oct 28 13:05:55 vps21426nl systemd[1]: [email protected]: Failed with
result 'exit-code'.
I'm new to this