Hol@
I have tried unsuccessfully to make a vpn connection in graphic mode and I have not succeeded.
Import the client.ovpn file without problems, but at the time of connection it does not do its job and after a minute of work, the connection is not made.
With that same client.ovpn if I make the connection in shell, without errors of any kind.
Operating system: KDE neon 5.14
Plasma KDE version: 5.14.5
Qt version: 5.11.2
KDE Frameworks version: 5.54.0
Kernel version: 4.15.0-44-generic
Installed packages:
network management framework (OpenVPN plugin core)
network management framework (PPTP plugin core)
openvpn
The output of "journalctl -u NetworkManager -f" tells me:
ene 29 21:42:50 anarkia nm-openvpn[9399]: WARNING: file '/home/vicente/.local/share/networkmanagement/certificates/ojos/private.key' is group or others accessible
ene 29 21:42:50 anarkia nm-openvpn[9399]: OpenVPN 2.4.4 x86_64-pc-linux-gnu [SSL (OpenSSL)] [LZO] [LZ4] [EPOLL] [PKCS11] [MH/PKTINFO] [AEAD] built on Sep 5 2018
ene 29 21:42:50 anarkia nm-openvpn[9399]: library versions: OpenSSL 1.1.0g 2 Nov 2017, LZO 2.08
ene 29 21:42:50 anarkia nm-openvpn[9399]: WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info.
ene 29 21:42:50 anarkia nm-openvpn[9399]: NOTE: the current --script-security setting may allow this configuration to call user-defined scripts
ene 29 21:42:50 anarkia nm-openvpn[9399]: TCP/UDP: Preserving recently used remote address: [AF_INET]xxx:xxx:xxx:xxx:xxxx
ene 29 21:42:50 anarkia nm-openvpn[9399]: UDP link local: (not bound)
ene 29 21:42:50 anarkia nm-openvpn[9399]: UDP link remote: [AF_INET]xxx:xxx:xxx:xxx:xxxx
ene 29 21:42:50 anarkia nm-openvpn[9399]: NOTE: chroot will be delayed because of --client, --pull, or --up-delay
ene 29 21:42:50 anarkia nm-openvpn[9399]: NOTE: UID/GID downgrade will be delayed because of --client, --pull, or --up-delay
ene 29 21:43:50 anarkia NetworkManager[1086]: <warn> [1548794630.8145] vpn-connection[0x556191df4440,e95c6883-1dbb-4a21-b866-dc7aaa07fdee,"ojos",0]: VPN connection: connect timeout exceeded.
ene 29 21:43:50 anarkia nm-openvpn-serv[9396]: Connect timer expired, disconnecting.
ene 29 21:43:50 anarkia NetworkManager[1086]: <warn> [1548794630.8253] vpn-connection[0x556191df4440,e95c6883-1dbb-4a21-b866-dc7aaa07fdee,"ojos",0]: VPN plugin: failed: connect-failed (1)
ene 29 21:43:50 anarkia NetworkManager[1086]: <info> [1548794630.8259] vpn-connection[0x556191df4440,e95c6883-1dbb-4a21-b866-dc7aaa07fdee,"ojos",0]: VPN plugin: state changed: stopping (5)
ene 29 21:43:50 anarkia NetworkManager[1086]: <info> [1548794630.8266] vpn-connection[0x556191df4440,e95c6883-1dbb-4a21-b866-dc7aaa07fdee,"ojos",0]: VPN plugin: state changed: stopped (6)

Thanks for the help

The same problem in Kubuntu 20.04, in Ubuntu works good.