Debian repo temporarily unavailable Tuesday 1st January 2019 17:26:00

The Debian repository is temporarily unavailable due to an expired GPG key. This issue will be resolved later today. As a temporary workaround, you can modify /etc/apt/sources.list.d/yarn.list to add the trusted=yes flag:

deb [trusted=yes] stable main 

Please follow the Github issue for updates.

We will be taking steps to ensure that this does not happen.

The Debian repo has now been fixed! Thank you for your patience.