Hi,
I'm trying to update my Raspberry Pi but am getting the following error:
Ign:5
http://apt.rb24.com jessie InRelease
Fetched 29.1 kB in 2s (12.8 kB/s)
Reading package lists... Done
W: GPG error:
http://apt.rb24.com jessie InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY F2A8428D3C354953
W: The repository '
http://apt.rb24.com jessie 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.
I'm running Stretch.
Thanks
Neil