Expired GPG key for NS Debian packages

Hiya!
Looks like your GPG signature key has expired on 1st of Jan 2022?
The following signatures were invalid: EXPKEYSIG CFF064C9D12ECB34 Orne Brocaar info@brocaar.com

root@CIE-4075:~# gpg --list-keys --no-default-keyring --keyring /usr/share/keyrings/chirpstack-archive-keyring.gpg -v
gpg: using pgp trust model
gpg: Note: signature key CFF064C9D12ECB34 expired Sat 01 Jan 2022 17:07:43 GMT
/usr/share/keyrings/chirpstack-archive-keyring.gpg

pub rsa4096 2017-01-13 [SC]
E078226D4144665AD8793A601CE2AFD36DBCCA00
uid [ unknown] Orne Brocaar info@brocaar.com
sub rsa4096 2017-01-13 [S] [expired: 2022-01-01]
sub rsa4096 2017-01-13 [E]

Hi,

I had the same problem, found the solution here:

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 1CE2AFD36DBCCA00