I use the page https://openwrt.org/docs/guide-user/services/vpn/openvpn/client
get an error
uci show firewall; echo && uci show network; echo && uci show openvpn; echo && logread -e openvpn
; echo && logread -e openvpn
firewall.@defaults[0]=defaults
firewall.@defaults[0].syn_flood='1'
firewall.@defaults[0].input='ACCEPT'
firewall.@defaults[0].output='ACCEPT'
firewall.@defaults[0].forward='REJECT'
firewall.@zone[0]=zone
firewall.@zone[0].name='lan'
firewall.@zone[0].input='ACCEPT'
firewall.@zone[0].output='ACCEPT'
firewall.@zone[0].forward='ACCEPT'
firewall.@zone[0].network='lan'
firewall.@zone[1]=zone
firewall.@zone[1].name='wan'
firewall.@zone[1].input='REJECT'
firewall.@zone[1].output='ACCEPT'
firewall.@zone[1].forward='REJECT'
firewall.@zone[1].masq='1'
firewall.@zone[1].mtu_fix='1'
firewall.@zone[1].network='wan wan6 wwan'
firewall.@forwarding[0]=forwarding
firewall.@forwarding[0].src='lan'
firewall.@forwarding[0].dest='wan'
firewall.@rule[0]=rule
firewall.@rule[0].name='Allow-DHCP-Renew'
firewall.@rule[0].src='wan'
firewall.@rule[0].proto='udp'
firewall.@rule[0].dest_port='68'
firewall.@rule[0].target='ACCEPT'
firewall.@rule[0].family='ipv4'
firewall.@rule[1]=rule
firewall.@rule[1].name='Allow-Ping'
firewall.@rule[1].src='wan'
firewall.@rule[1].proto='icmp'
firewall.@rule[1].icmp_type='echo-request'
firewall.@rule[1].family='ipv4'
firewall.@rule[1].target='ACCEPT'
firewall.@rule[2]=rule
firewall.@rule[2].name='Allow-IGMP'
firewall.@rule[2].src='wan'
firewall.@rule[2].proto='igmp'
firewall.@rule[2].family='ipv4'
firewall.@rule[2].target='ACCEPT'
firewall.@rule[3]=rule
firewall.@rule[3].name='Allow-DHCPv6'
firewall.@rule[3].src='wan'
firewall.@rule[3].proto='udp'
firewall.@rule[3].src_ip='fc00::/6'
firewall.@rule[3].dest_ip='fc00::/6'
firewall.@rule[3].dest_port='546'
firewall.@rule[3].family='ipv6'
firewall.@rule[3].target='ACCEPT'
firewall.@rule[4]=rule
firewall.@rule[4].name='Allow-MLD'
firewall.@rule[4].src='wan'
firewall.@rule[4].proto='icmp'
firewall.@rule[4].src_ip='fe80::/10'
firewall.@rule[4].icmp_type='130/0' '131/0' '132/0' '143/0'
firewall.@rule[4].family='ipv6'
firewall.@rule[4].target='ACCEPT'
firewall.@rule[5]=rule
firewall.@rule[5].name='Allow-ICMPv6-Input'
firewall.@rule[5].src='wan'
firewall.@rule[5].proto='icmp'
firewall.@rule[5].icmp_type='echo-request' 'echo-reply' 'destination-unreachable' 'packet-too-big' 'time-exceeded' 'bad-header' 'unknown-header-type' 'router-solicitation' 'neighbour-solicitation' 'router-advertisement' 'neighbour-advertisement'
firewall.@rule[5].limit='1000/sec'
firewall.@rule[5].family='ipv6'
firewall.@rule[5].target='ACCEPT'
firewall.@rule[6]=rule
firewall.@rule[6].name='Allow-ICMPv6-Forward'
firewall.@rule[6].src='wan'
firewall.@rule[6].dest='*'
firewall.@rule[6].proto='icmp'
firewall.@rule[6].icmp_type='echo-request' 'echo-reply' 'destination-unreachable' 'packet-too-big' 'time-exceeded' 'bad-header' 'unknown-header-type'
firewall.@rule[6].limit='1000/sec'
firewall.@rule[6].family='ipv6'
firewall.@rule[6].target='ACCEPT'
firewall.@rule[7]=rule
firewall.@rule[7].name='Allow-IPSec-ESP'
firewall.@rule[7].src='wan'
firewall.@rule[7].dest='lan'
firewall.@rule[7].proto='esp'
firewall.@rule[7].target='ACCEPT'
firewall.@rule[8]=rule
firewall.@rule[8].name='Allow-ISAKMP'
firewall.@rule[8].src='wan'
firewall.@rule[8].dest='lan'
firewall.@rule[8].dest_port='500'
firewall.@rule[8].proto='udp'
firewall.@rule[8].target='ACCEPT'
firewall.@include[0]=include
firewall.@include[0].path='/etc/firewall.user'
firewall.@zone[2]=zone
firewall.@zone[2].name='vpnclient'
firewall.@zone[2].network='vpnclient'
firewall.@zone[2].input='REJECT'
firewall.@zone[2].output='ACCEPT'
firewall.@zone[2].forward='REJECT'
firewall.@zone[2].masq='1'
firewall.@zone[2].mtu_fix='1'
firewall.@forwarding[1]=forwarding
firewall.@forwarding[1].src='lan'
firewall.@forwarding[1].dest='vpnclient'
network.loopback=interface
network.loopback.ifname='lo'
network.loopback.proto='static'
network.loopback.ipaddr='127.0.0.1'
network.loopback.netmask='255.0.0.0'
network.globals=globals
network.globals.ula_prefix='fd91:b0a5:3f2f::/48'
network.lan=interface
network.lan.type='bridge'
network.lan.ifname='eth1'
network.lan.proto='static'
network.lan.netmask='255.255.255.0'
network.lan.ip6assign='60'
network.lan.ipaddr='192.168.3.1'
network.wan=interface
network.wan.ifname='eth0'
network.wan.proto='dhcp'
network.wan6=interface
network.wan6.ifname='eth0'
network.wan6.proto='dhcpv6'
network.wwan=interface
network.wwan.proto='dhcp'
network.vpnclient=interface
network.vpnclient.ifname='tun0'
network.vpnclient.proto='none'
openvpn.custom_config=openvpn
openvpn.custom_config.enabled='0'
openvpn.custom_config.config='/etc/openvpn/my-vpn.conf'
openvpn.sample_server=openvpn
openvpn.sample_server.enabled='0'
openvpn.sample_server.port='1194'
openvpn.sample_server.proto='udp'
openvpn.sample_server.dev='tun'
openvpn.sample_server.ca='/etc/openvpn/ca.crt'
openvpn.sample_server.cert='/etc/openvpn/server.crt'
openvpn.sample_server.key='/etc/openvpn/server.key'
openvpn.sample_server.dh='/etc/openvpn/dh1024.pem'
openvpn.sample_server.server='10.8.0.0 255.255.255.0'
openvpn.sample_server.ifconfig_pool_persist='/tmp/ipp.txt'
openvpn.sample_server.keepalive='10 120'
openvpn.sample_server.compress='lzo'
openvpn.sample_server.persist_key='1'
openvpn.sample_server.persist_tun='1'
openvpn.sample_server.user='nobody'
openvpn.sample_server.status='/tmp/openvpn-status.log'
openvpn.sample_server.verb='3'
openvpn.sample_client=openvpn
openvpn.sample_client.enabled='0'
openvpn.sample_client.client='1'
openvpn.sample_client.dev='tun'
openvpn.sample_client.proto='udp'
openvpn.sample_client.remote='my_server_1 1194'
openvpn.sample_client.resolv_retry='infinite'
openvpn.sample_client.nobind='1'
openvpn.sample_client.persist_key='1'
openvpn.sample_client.persist_tun='1'
openvpn.sample_client.user='nobody'
openvpn.sample_client.ca='/etc/openvpn/ca.crt'
openvpn.sample_client.cert='/etc/openvpn/client.crt'
openvpn.sample_client.key='/etc/openvpn/client.key'
openvpn.sample_client.compress='lzo'
openvpn.sample_client.verb='3'
openvpn.vpnclient=openvpn
openvpn.vpnclient.enabled='1'
openvpn.vpnclient.config='/etc/openvpn/vpnclient.ovpn'
Mon Jan 7 15:46:02 2019 daemon.err openvpn(vpnclient)[6401]: Options error: In [CMD-LINE]:1: Error opening configuration file: openvpn-vpnclient.conf
Mon Jan 7 15:46:02 2019 daemon.warn openvpn(vpnclient)[6401]: Use --help for more information.
Mon Jan 7 15:46:07 2019 daemon.err openvpn(vpnclient)[6408]: Options error: In [CMD-LINE]:1: Error opening configuration file: openvpn-vpnclient.conf
Mon Jan 7 15:46:07 2019 daemon.warn openvpn(vpnclient)[6408]: Use --help for more information.
Mon Jan 7 15:46:12 2019 daemon.err openvpn(vpnclient)[6409]: Options error: In [CMD-LINE]:1: Error opening configuration file: openvpn-vpnclient.conf
Mon Jan 7 15:46:12 2019 daemon.warn openvpn(vpnclient)[6409]: Use --help for more information.
Mon Jan 7 15:46:17 2019 daemon.err openvpn(vpnclient)[6410]: Options error: In [CMD-LINE]:1: Error opening configuration file: openvpn-vpnclient.conf
Mon Jan 7 15:46:17 2019 daemon.warn openvpn(vpnclient)[6410]: Use --help for more information.
Mon Jan 7 15:46:22 2019 daemon.err openvpn(vpnclient)[6411]: Options error: In [CMD-LINE]:1: Error opening configuration file: openvpn-vpnclient.conf
Mon Jan 7 15:46:22 2019 daemon.warn openvpn(vpnclient)[6411]: Use --help for more information.
Mon Jan 7 15:46:28 2019 daemon.err openvpn(vpnclient)[6415]: Options error: In [CMD-LINE]:1: Error opening configuration file: openvpn-vpnclient.conf
Mon Jan 7 15:46:28 2019 daemon.warn openvpn(vpnclient)[6415]: Use --help for more information.
Mon Jan 7 15:46:33 2019 daemon.err openvpn(vpnclient)[6416]: Options error: In [CMD-LINE]:1: Error opening configuration file: openvpn-vpnclient.conf
Mon Jan 7 15:46:33 2019 daemon.warn openvpn(vpnclient)[6416]: Use --help for more information.
Mon Jan 7 15:46:38 2019 daemon.err openvpn(vpnclient)[6417]: Options error: In [CMD-LINE]:1: Error opening configuration file: openvpn-vpnclient.conf
Mon Jan 7 15:46:38 2019 daemon.warn openvpn(vpnclient)[6417]: Use --help for more information.
Mon Jan 7 15:46:43 2019 daemon.err openvpn(vpnclient)[6418]: Options error: In [CMD-LINE]:1: Error opening configuration file: openvpn-vpnclient.conf
Mon Jan 7 15:46:43 2019 daemon.warn openvpn(vpnclient)[6418]: Use --help for more information.
Mon Jan 7 15:46:48 2019 daemon.err openvpn(vpnclient)[6419]: Options error: In [CMD-LINE]:1: Error opening configuration file: openvpn-vpnclient.conf
Mon Jan 7 15:46:48 2019 daemon.warn openvpn(vpnclient)[6419]: Use --help for more information.
Mon Jan 7 15:46:53 2019 daemon.err openvpn(vpnclient)[6420]: Options error: In [CMD-LINE]:1: Error opening configuration file: openvpn-vpnclient.conf
Mon Jan 7 15:46:53 2019 daemon.warn openvpn(vpnclient)[6420]: Use --help for more information.
Mon Jan 7 15:46:58 2019 daemon.err openvpn(vpnclient)[6421]: Options error: In [CMD-LINE]:1: Error opening configuration file: openvpn-vpnclient.conf
Mon Jan 7 15:46:58 2019 daemon.warn openvpn(vpnclient)[6421]: Use --help for more information.
Mon Jan 7 15:47:03 2019 daemon.err openvpn(vpnclient)[6422]: Options error: In [CMD-LINE]:1: Error opening configuration file: openvpn-vpnclient.conf
Mon Jan 7 15:47:03 2019 daemon.warn openvpn(vpnclient)[6422]: Use --help for more information.
Mon Jan 7 15:47:08 2019 daemon.err openvpn(vpnclient)[6423]: Options error: In [CMD-LINE]:1: Error opening configuration file: openvpn-vpnclient.conf
Mon Jan 7 15:47:08 2019 daemon.warn openvpn(vpnclient)[6423]: Use --help for more information.
Mon Jan 7 15:47:13 2019 daemon.err openvpn(vpnclient)[6424]: Options error: In [CMD-LINE]:1: Error opening configuration file: openvpn-vpnclient.conf
Mon Jan 7 15:47:13 2019 daemon.warn openvpn(vpnclient)[6424]: Use --help for more information.
Mon Jan 7 15:47:18 2019 daemon.err openvpn(vpnclient)[6425]: Options error: In [CMD-LINE]:1: Error opening configuration file: openvpn-vpnclient.conf
Mon Jan 7 15:47:18 2019 daemon.warn openvpn(vpnclient)[6425]: Use --help for more information.
Mon Jan 7 15:47:23 2019 daemon.err openvpn(vpnclient)[6426]: Options error: In [CMD-LINE]:1: Error opening configuration file: openvpn-vpnclient.conf
Mon Jan 7 15:47:23 2019 daemon.warn openvpn(vpnclient)[6426]: Use --help for more information.
Mon Jan 7 15:47:28 2019 daemon.err openvpn(vpnclient)[6427]: Options error: In [CMD-LINE]:1: Error opening configuration file: openvpn-vpnclient.conf
Mon Jan 7 15:47:28 2019 daemon.warn openvpn(vpnclient)[6427]: Use --help for more information.
Mon Jan 7 15:47:33 2019 daemon.err openvpn(vpnclient)[6428]: Options error: In [CMD-LINE]:1: Error opening configuration file: openvpn-vpnclient.conf
Mon Jan 7 15:47:33 2019 daemon.warn openvpn(vpnclient)[6428]: Use --help for more information.
Mon Jan 7 15:47:38 2019 daemon.err openvpn(vpnclient)[6429]: Options error: In [CMD-LINE]:1: Error opening configuration file: openvpn-vpnclient.conf
Mon Jan 7 15:47:38 2019 daemon.warn openvpn(vpnclient)[6429]: Use --help for more information.
Mon Jan 7 15:47:43 2019 daemon.err openvpn(vpnclient)[6430]: Options error: In [CMD-LINE]:1: Error opening configuration file: openvpn-vpnclient.conf
Mon Jan 7 15:47:43 2019 daemon.warn openvpn(vpnclient)[6430]: Use --help for more information.
Mon Jan 7 15:47:48 2019 daemon.err openvpn(vpnclient)[6431]: Options error: In [CMD-LINE]:1: Error opening configuration file: openvpn-vpnclient.conf
Mon Jan 7 15:47:48 2019 daemon.warn openvpn(vpnclient)[6431]: Use --help for more information.
Mon Jan 7 15:47:53 2019 daemon.err openvpn(vpnclient)[6432]: Options error: In [CMD-LINE]:1: Error opening configuration file: openvpn-vpnclient.conf
Mon Jan 7 15:47:53 2019 daemon.warn openvpn(vpnclient)[6432]: Use --help for more information.
Mon Jan 7 15:47:58 2019 daemon.err openvpn(vpnclient)[6433]: Options error: In [CMD-LINE]:1: Error opening configuration file: openvpn-vpnclient.conf
Mon Jan 7 15:47:58 2019 daemon.warn openvpn(vpnclient)[6433]: Use --help for more information.
Mon Jan 7 15:48:03 2019 daemon.err openvpn(vpnclient)[6434]: Options error: In [CMD-LINE]:1: Error opening configuration file: openvpn-vpnclient.conf
Mon Jan 7 15:48:03 2019 daemon.warn openvpn(vpnclient)[6434]: Use --help for more information.
.ovpn file locate in /etc/openvpn/vpnclient.ovpn