There are two errors that come up in relation to this.
-
openHAB errors in the logs failing to download and install any add-on.
-
Error from apt/yum/etc. indicating it cannot download the list of packages from bintray.
Downloading the kar file only fixes 1. To fix 2 one needs to eliminate the link to bintray from the repos used by the package manager (e.g. apt). openHABian has an option to do that for you. For those who ran an apt upgrade prior to May 1st the upgrade did this for you. However, those who failed/did not know to run an upgrade prior to May 1st will still have an entry in their sources list pointing to bintray and running apt update
will generate an error.