Hello,
since today I got this error message when I try to update with apt-get update
Code
E: The repository 'https://dl.bintray.com/openmediavault-plugin-developers/arrakis stretch Release' is no longer signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
First I thought it had something to do with my "old" backport kernel (v4.12) and even after updating to v4.13 I still got this error message.
So how can this be fixed?
Thanks in advance