Followed the instructions under "Install OMV 4 on Debian 9 Stretch", which went fine apart from installing the "resolvconf" package beforehand, and OMV is running fine without any problems under this OS until today.
I followed the "Installation of OMV Extras" guide, installed beforehand the "dirmngr" package, and fired from the command line under "root":
However, after a while, I'm getting the following output of error messages:
[…]
Exception ignored in: <function WeakValueDictionary.__init__.<locals>.remove at 0x7632a4b0>
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 0x7632a4b0>
Traceback (most recent call last):
File "/usr/lib/python3.5/weakref.py", line 117, in remove
TypeError: 'NoneType' object is not callable
Updating repos ...
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: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: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: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: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: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
Hit:5 http://raspbian.raspberrypi.org/raspbian stretch InRelease
Hit:7 http://archive.raspberrypi.org/debian stretch InRelease
Hit:8 http://packages.openmediavault.org/public arrakis InRelease
Get:6 http://cdn-fastly.deb.debian.org/debian stretch-backports InRelease [91.8 kB]
Hit:9 https://openmediavault.github.io/packages arrakis InRelease
Ign:10 https://dl.bintray.com/openmed…plugin-developers/arrakis stretch InRelease
Get:11 https://dl.bintray.com/openmed…plugin-developers/arrakis stretch Release [4389 B]
Get:12 https://dl.bintray.com/openmed…plugin-developers/arrakis stretch Release.gpg [821 B]
Ign:6 http://cdn-fastly.deb.debian.org/debian stretch-backports InRelease
Get:13 http://cdn-fastly.deb.debian.org/debian stretch-backports/main armhf Packages [424 kB]
Get:14 http://cdn-fastly.deb.debian.org/debian stretch-backports/main Translation-en [325 kB]
Get:15 http://cdn-fastly.deb.debian.org/debian stretch-backports/contrib armhf Packages [5728 B]
Get:16 http://cdn-fastly.deb.debian.org/debian stretch-backports/contrib Translation-en [5877 B]
Get:17 http://cdn-fastly.deb.debian.org/debian stretch-backports/non-free armhf Packages [6408 B]
Get:18 http://cdn-fastly.deb.debian.org/debian stretch-backports/non-free Translation-en [30.3 kB]
Get:19 https://dl.bintray.com/openmed…plugin-developers/arrakis stretch/main armhf Packages [16.5 kB]
Fetched 910 kB in 4s (216 kB/s)
Exception ignored in: <function WeakValueDictionary.__init__.<locals>.remove at 0x762934b0>
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 0x762934b0>
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
W: GPG error: http://cdn-fastly.deb.debian.org/debian stretch-backports InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 8B48AD6246925553 NO_PUBKEY 7638D0442B90D010
W: The repository 'http://httpredir.debian.org/debian stretch-backports InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
What can or shall I do here? Seems that there are some hardcoded lines pointing to the native Debian 9 Stretch repository