Fout gpg key debian buster

[Ika]

Debian buster probleem, kan niet meer updaten.

Fout:1 http://repository.spotify.com stable InRelease                                                     
De volgende ondertekeningen konden niet geverifieerd worden omdat de publieke sleutel niet beschikbaar is: NO_PUBKEY 5E3C45D7B312C643

Zoveel oplossingen te vinden hier, maar geen 1 dat voor mij werkt...
heb dit al geprobeerd:

gpg --keyserver keyserver.debian.com --recv 5E3C45D7B312C643
gpg: directory '/root/.gnupg' created
gpg: keybox '/root/.gnupg/pubring.kbx' created
gpg: keyserver receive failed: No name
root@bla# gpg --export --armor 5E3C45D7B312C643 |sudo apt-key add -
gpg: WARNING: nothing exported
gpg: no valid OpenPGP data found.

Hoe los ik op hulp aub?

[M_aD]

Die specifieke, schijnbaar zelf toegevoegde, repo/PPA van spotify uitschakelen? Misschien dat dat werkt.

[Ika]

dank M_ad, maar hoe?
dit is mijn sourceslist:

# deb cdrom:[Debian GNU/Linux 10.2.0 _Buster_ - Unofficial amd64 DVD Binary-1 with firmware 20191116-09:57]/ buster contrib main non-free

deb http://deb.debian.org/debian/ buster main non-free contrib
deb-src http://deb.debian.org/debian/ buster main non-free contrib

deb http://security.debian.org/debian-security buster/updates main contrib non-free
deb-src http://security.debian.org/debian-security buster/updates main contrib non-free

# buster-updates, previously known as 'volatile'
deb http://deb.debian.org/debian/ buster-updates main contrib non-free
deb-src http://deb.debian.org/debian/ buster-updates main contrib non-free

# This system was installed using small removable media
# (e.g. netinst, live or single CD). The matching "deb cdrom"
# entries were disabled at the end of the installation process.
# For information about how to configure apt package sources,
# see the sources.list(5) manual.

[Ika]

ok, heb het gevonden hier:

How to apt-delete-repository
http://unix.stackexchange.com/questions/219341/ddg#219344

To remove a repository, you have to do 2 things:

    Remove it from sources.list.

    If it was added by add-apt-repository then you will find it in its own file in /etc/apt/sources.list.d, not in the main sources.list.

    sudo rm /etc/apt/sources.list.d/nemh-systemback-precise.list

    Optional: Stop trusting the key

    Use apt-key list to list trusted keys. Look for an entry like "Launchpad PPA for Kendek" in this case. Then use apt-key del to delete it:

    sudo apt-key del 73C62A1B

--Celada

Bedankt voor de hulp!