Come faccio a correggere l'errore "Unable to validate the following destination configurations" in AWS CloudFormation?

Come faccio a evitare l'errore "Unable to validate the following destination configurations" con le notifiche degli eventi Lambda in CloudFormation?

Come posso risolvere gli errori "Container killed on request. Exit code is 137" in Spark su Amazon EMR?

Come posso risolvere l'errore: "The following parameters are not defined for the specified group” quando aggiorno la versione del motore del cluster RDS utilizzando CloudFormation?

I'm following [this](https://aws.amazon.com/blogs/robotics/deploy-robotic-applications-using-aws-robomaker/) tutorial for deploying robot applications on real robots using aws robomaker.
My question is, will the source code be available on the deployed robot? 
if yes, how should I deploy my code so the user don't have access to the source code?

Deploying my application as colcon bundle, is the source code hidden?

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