Hi @fkrauthan,
Your application seems to be crashing, quite often. By default, Machines will automatically restart if they crash, but only up to the configured limit (the default restart policy is to retry 10 times within a 5-minute interval), and your machines were stopped without restarting when they crashed repeatedly too quickly. (You will find a machine has reached its max restart count of 10 line in your application logs.) I’d suggest debugging your application, but if frequent crashing is okay for your use-case, you can either adjust the restart policy, or configure autostart on your services so that machines will always attempt to be started to serve any incoming request.