@matisok I’m thinking other things that you can do.
Easiest is to try to add a Device Variable called ENCRIPTION_KEY and the value balena. Try to see what happens.
Another thing that you can do, is to comment these lines but then you will need to push a new releease on your fleet. Not sure if this is going to break anything → nodeRED-iiot-gateway/settings.js at f3e9777684fc1274ba14e64772c46996b4fb2d8f · mpous/nodeRED-iiot-gateway · GitHub
Let me know if that works!