The repository 'https://dl.bintray.com/openhab/apt-repo2 stable Release' is not signed. (Raspberry pi 3)

[marcel_erkel]

The APT/RPM 'testing' (Milestone) repository has moved

Hi all, Due to some space restrictions on the Bintray repository, we are now using Artifactory as our main testing (milestone) repository. Don’t worry, all previous milestones are available in Artifactory if you need them, so downgrading will still work after the move if you need it. The following is only relevent to those wanting the latest milestone releases. If you’re on the old Bintray repo for testing, simply run the commands: You’ll need to update your source lists to accomedate the cha…

Edit: Ah… you’re running stable. Then the link above does not apply.

You did read this?

APT Repo Public Key Expiration & Update

All, Our public key for the APT repos (snapshot/milestones/releases) expires today. We have just extended its validity until 2023 (thanks @theo!), but you will have to make sure that your Linux installation is aware of the new key, otherwise your will have problems when updating openHAB through apt. All you need to do execute: wget -qO - 'https://bintray.com/user/downloadSubjectPublicKey?username=openhab' | sudo apt-key add - Best regards, Kai