Error: please connect interfaces

[execut]

Hello! Run script failed with error:

# easy-openvpn-server.openvpn 
Error: please connect interfaces

Here the script is checked files of interfaces, but it does not exist: https://github.com/IBCNServices/easy-openvpn-server/blob/9f5ca4d0145b729ceb4ac2ac36b251e2572558b5/scripts/run.sh#L9

Files are really not existed, but snap interfaces and connections exist:

# snap connections 
Interface         Plug                                  Slot               Notes
firewall-control  easy-openvpn-server:firewall-control  :firewall-control  -
network           easy-openvpn-server:network           :network           -
network-bind      easy-openvpn-server:network-bind      :network-bind      -
network-control   easy-openvpn-server:network-control   :network-control   -

# lsb_release -ir
Distributor ID: Ubuntu
Release:        21.10

Help, please. How fix this error?

[merlijn-sebrechts]

You do not need to use the command openvpn. This command is only for testing and debugging purposes. The VPN server should start automatically in the background after installation.

[execut]

Launching in the usual way also does not work and also gives this error. Here is the output of the system log after running the easy-openvpn-server setup command with the same error:

Jan 10 12:06:56 sd-123 systemd[3126]: Started snap.easy-openvpn-server.easy-openvpn-server.2d76a712-d495-44c0-8b15-652b56af983d.scope.
Jan 10 12:06:57 sd-123 kernel: [138526.999716] audit: type=1400 audit(1641812817.035:114): apparmor="DENIED" operation="open" profile="snap.easy-openvpn-server.easy-openvpn-server" name="/proc/1620495/mounts" pid=1620495 comm="python3" requested_mask="r" denied_mask="r" fsuid=0 ouid=0
Jan 10 12:06:57 sd-123 kernel: [138527.330508] audit: type=1400 audit(1641812817.363:115): apparmor="DENIED" operation="capable" profile="snap.easy-openvpn-server.easy-openvpn-server" pid=1620495 comm="python3" capability=3  capname="fowner"
Jan 10 12:06:57 sd-123 systemd[1]: Stopping Service for snap application easy-openvpn-server.tcp-server...
Jan 10 12:06:57 sd-123 systemd[1]: snap.easy-openvpn-server.tcp-server.service: Deactivated successfully.
Jan 10 12:06:57 sd-123 systemd[1]: Stopped Service for snap application easy-openvpn-server.tcp-server.
Jan 10 12:06:57 sd-123 systemd[1]: Started Service for snap application easy-openvpn-server.tcp-server.
Jan 10 12:06:57 sd-123 easy-openvpn-server.tcp-server[1620592]: Error: please connect interfaces
Jan 10 12:06:57 sd-123 systemd[1]: Stopping Service for snap application easy-openvpn-server.udp-server...
Jan 10 12:06:57 sd-123 systemd[1]: snap.easy-openvpn-server.udp-server.service: Deactivated successfully.
Jan 10 12:06:57 sd-123 systemd[1]: Stopped Service for snap application easy-openvpn-server.udp-server.
Jan 10 12:06:58 sd-123 systemd[1]: Started Service for snap application easy-openvpn-server.udp-server.
Jan 10 12:06:58 sd-123 kernel: [138528.096424] audit: type=1400 audit(1641812818.131:116): apparmor="DENIED" operation="open" profile="snap.easy-openvpn-server.easy-openvpn-server" name="/etc/iproute2/rt_scopes" pid=1620666 comm="ip" requested_mask="r" denied_mask="r" fsuid=0 ouid=0
Jan 10 12:06:58 sd-123 easy-openvpn-server.udp-server[1620631]: Error: please connect interfaces
Jan 10 12:06:58 sd-123 systemd[3126]: snap.easy-openvpn-server.easy-openvpn-server.2d76a712-d495-44c0-8b15-652b56af983d.scope: Succeeded.

[execut]

The following commands solved the problem, and the VPN started working fine:

cd ~/snap/easy-openvpn-server/101;
touch internal.network-control-connected;
touch internal.firewall-control-connected;
easy-openvpn-server setup;

Why did you do this check? Why is it my case these files do not exist?