This is the install process, I cannot spot anything here (reran the install, as you can see):
root@NAS:/srv/91a2af43-24c7-475f-b28b-3cb663d2aa7e/Media# apt update && apt -y install ca-certificates wget net-tools gnupg
Get:1 file:/var/cache/openmediavault/archives InRelease
Ign:1 file:/var/cache/openmediavault/archives InRelease
Get:2 file:/var/cache/openmediavault/archives Release
Ign:2 file:/var/cache/openmediavault/archives Release
Get:3 file:/var/cache/openmediavault/archives Packages
Ign:3 file:/var/cache/openmediavault/archives Packages
Get:4 file:/var/cache/openmediavault/archives Translation-en
Ign:4 file:/var/cache/openmediavault/archives Translation-en
Get:5 file:/var/cache/openmediavault/archives Translation-en_US
Ign:5 file:/var/cache/openmediavault/archives Translation-en_US
Get:3 file:/var/cache/openmediavault/archives Packages
Ign:3 file:/var/cache/openmediavault/archives Packages
Get:4 file:/var/cache/openmediavault/archives Translation-en
Ign:4 file:/var/cache/openmediavault/archives Translation-en
Get:5 file:/var/cache/openmediavault/archives Translation-en_US
Ign:5 file:/var/cache/openmediavault/archives Translation-en_US
Get:3 file:/var/cache/openmediavault/archives Packages
Ign:3 file:/var/cache/openmediavault/archives Packages
Get:4 file:/var/cache/openmediavault/archives Translation-en
Ign:4 file:/var/cache/openmediavault/archives Translation-en
Get:5 file:/var/cache/openmediavault/archives Translation-en_US
Ign:5 file:/var/cache/openmediavault/archives Translation-en_US
Get:3 file:/var/cache/openmediavault/archives Packages
Ign:3 file:/var/cache/openmediavault/archives Packages
Get:4 file:/var/cache/openmediavault/archives Translation-en
Ign:4 file:/var/cache/openmediavault/archives Translation-en
Get:5 file:/var/cache/openmediavault/archives Translation-en_US
Ign:5 file:/var/cache/openmediavault/archives Translation-en_US
Get:3 file:/var/cache/openmediavault/archives Packages
Ign:3 file:/var/cache/openmediavault/archives Packages
Get:4 file:/var/cache/openmediavault/archives Translation-en
Ign:4 file:/var/cache/openmediavault/archives Translation-en
Get:5 file:/var/cache/openmediavault/archives Translation-en_US
Ign:5 file:/var/cache/openmediavault/archives Translation-en_US
Get:3 file:/var/cache/openmediavault/archives Packages
Get:4 file:/var/cache/openmediavault/archives Translation-en
Ign:4 file:/var/cache/openmediavault/archives Translation-en
Get:5 file:/var/cache/openmediavault/archives Translation-en_US
Ign:5 file:/var/cache/openmediavault/archives Translation-en_US
Ign:6 http://httpredir.debian.org/debian stretch InRelease
Get:7 https://openmediavault.github.io/packages arrakis InRelease [12.8 kB]
Hit:8 http://ftp.debian.org/debian stretch-updates InRelease
Hit:9 http://httpredir.debian.org/debian stretch-backports InRelease
Hit:10 http://httpredir.debian.org/debian stretch Release
Hit:11 http://security.debian.org stretch/updates InRelease
Ign:12 https://dl.bintray.com/openmediavault-plugin-developers/arrakis stretch InRelease
Ign:13 https://dl.bintray.com/openmediavault-plugin-developers/arrakis-docker stretch InRelease
Get:14 https://dl.bintray.com/openmediavault-plugin-developers/arrakis stretch Release [4,389 B]
Hit:14 https://dl.bintray.com/openmediavault-plugin-developers/arrakis stretch Release
Ign:16 http://ftp.us.debian.org/debian stretch InRelease
Get:18 https://dl.bintray.com/openmediavault-plugin-developers/arrakis-docker stretch Release [3,540 B]
Hit:18 https://dl.bintray.com/openmediavault-plugin-developers/arrakis-docker stretch Release
Hit:19 http://ftp.us.debian.org/debian stretch Release
Hit:22 http://packages.openmediavault.org/public arrakis InRelease
Hit:23 http://as-repository.openvpn.net/as/debian stretch InRelease
Get:24 https://download.docker.com/linux/debian stretch InRelease [44.8 kB]
Fetched 57.6 kB in 5s (10.1 kB/s)
Reading package lists... Done
Building dependency tree
Reading state information... Done
All packages are up to date.
Reading package lists... Done
Building dependency tree
Reading state information... Done
ca-certificates is already the newest version (20200601~deb9u1).
gnupg is already the newest version (2.1.18-8~deb9u4).
net-tools is already the newest version (1.60+git20161116.90da8a0-1).
wget is already the newest version (1.18-5+deb9u3).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
root@NAS:/srv/91a2af43-24c7-475f-b28b-3cb663d2aa7e/Media# wget -qO - https://as-repository.openvpn.net/as-repo-public.gpg | apt-key add -
OK
root@NAS:/srv/91a2af43-24c7-475f-b28b-3cb663d2aa7e/Media# echo "deb http://as-repository.openvpn.net/as/debian stretch main">/etc/apt/sources.list.d/openvpn-as-repo.list
root@NAS:/srv/91a2af43-24c7-475f-b28b-3cb663d2aa7e/Media# apt update && apt -y install openvpn-as
Get:1 file:/var/cache/openmediavault/archives InRelease
Ign:1 file:/var/cache/openmediavault/archives InRelease
Get:2 file:/var/cache/openmediavault/archives Release
Ign:2 file:/var/cache/openmediavault/archives Release
Get:3 file:/var/cache/openmediavault/archives Packages
Ign:3 file:/var/cache/openmediavault/archives Packages
Get:4 file:/var/cache/openmediavault/archives Translation-en_US
Ign:4 file:/var/cache/openmediavault/archives Translation-en_US
Get:5 file:/var/cache/openmediavault/archives Translation-en
Ign:5 file:/var/cache/openmediavault/archives Translation-en
Get:3 file:/var/cache/openmediavault/archives Packages
Ign:3 file:/var/cache/openmediavault/archives Packages
Get:4 file:/var/cache/openmediavault/archives Translation-en_US
Ign:4 file:/var/cache/openmediavault/archives Translation-en_US
Get:5 file:/var/cache/openmediavault/archives Translation-en
Ign:5 file:/var/cache/openmediavault/archives Translation-en
Get:3 file:/var/cache/openmediavault/archives Packages
Ign:3 file:/var/cache/openmediavault/archives Packages
Get:4 file:/var/cache/openmediavault/archives Translation-en_US
Ign:4 file:/var/cache/openmediavault/archives Translation-en_US
Get:5 file:/var/cache/openmediavault/archives Translation-en
Ign:5 file:/var/cache/openmediavault/archives Translation-en
Get:3 file:/var/cache/openmediavault/archives Packages
Ign:3 file:/var/cache/openmediavault/archives Packages
Get:4 file:/var/cache/openmediavault/archives Translation-en_US
Ign:4 file:/var/cache/openmediavault/archives Translation-en_US
Get:5 file:/var/cache/openmediavault/archives Translation-en
Ign:5 file:/var/cache/openmediavault/archives Translation-en
Get:3 file:/var/cache/openmediavault/archives Packages
Ign:3 file:/var/cache/openmediavault/archives Packages
Get:4 file:/var/cache/openmediavault/archives Translation-en_US
Ign:4 file:/var/cache/openmediavault/archives Translation-en_US
Get:5 file:/var/cache/openmediavault/archives Translation-en
Ign:5 file:/var/cache/openmediavault/archives Translation-en
Get:3 file:/var/cache/openmediavault/archives Packages
Get:4 file:/var/cache/openmediavault/archives Translation-en_US
Ign:4 file:/var/cache/openmediavault/archives Translation-en_US
Get:5 file:/var/cache/openmediavault/archives Translation-en
Ign:5 file:/var/cache/openmediavault/archives Translation-en
Hit:6 http://security.debian.org stretch/updates InRelease
Hit:7 http://ftp.debian.org/debian stretch-updates InRelease
Hit:8 http://as-repository.openvpn.net/as/debian stretch InRelease
Hit:9 http://packages.openmediavault.org/public arrakis InRelease
Ign:10 http://httpredir.debian.org/debian stretch InRelease
Hit:11 http://httpredir.debian.org/debian stretch-backports InRelease
Hit:12 http://httpredir.debian.org/debian stretch Release
Ign:14 http://ftp.us.debian.org/debian stretch InRelease
Hit:15 http://ftp.us.debian.org/debian stretch Release
Get:17 https://openmediavault.github.io/packages arrakis InRelease [12.8 kB]
Get:18 https://download.docker.com/linux/debian stretch InRelease [44.8 kB]
Ign:19 https://dl.bintray.com/openmediavault-plugin-developers/arrakis stretch InRelease
Ign:20 https://dl.bintray.com/openmediavault-plugin-developers/arrakis-docker stretch InRelease
Get:21 https://dl.bintray.com/openmediavault-plugin-developers/arrakis stretch Release [4,389 B]
Hit:21 https://dl.bintray.com/openmediavault-plugin-developers/arrakis stretch Release
Get:23 https://dl.bintray.com/openmediavault-plugin-developers/arrakis-docker stretch Release [3,540 B]
Hit:23 https://dl.bintray.com/openmediavault-plugin-developers/arrakis-docker stretch Release
Fetched 57.6 kB in 5s (9,695 B/s)
Exception ignored in: <function WeakValueDictionary.__init__.<locals>.remove at 0x7f6fa6e97a60>
Traceback (most recent call last):
File "/usr/lib/python3.5/weakref.py", line 117, in remove
TypeError: 'NoneType' object is not callable
Exception ignored in: <function WeakValueDictionary.__init__.<locals>.remove at 0x7f6fa6e97a60>
Traceback (most recent call last):
File "/usr/lib/python3.5/weakref.py", line 117, in remove
TypeError: 'NoneType' object is not callable
Reading package lists... Done
Building dependency tree
Reading state information... Done
All packages are up to date.
Reading package lists... Done
Building dependency tree
Reading state information... Done
openvpn-as is already the newest version (2.8.7-c7d6c210-Debian9).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
The log file for OpenVPN AS only has logs from the working version, as it won't even start, it won't log.
And the output on the failed start gives me nothing!