Mission "Serverless 101" not working

Hello everyone,

When I try to complete the mission and try to use the Codeless sample service it gives me the following error:

Can not parse generic service: Failed to inspect service archive file.
BackendlessServerException: Undefined error
Cause: Exception
[CodeRunnerError]  Code: 0;  Msg: Failed to run code in sandbox on behalf of application's system user.;  Class: java.lang.Exception

Hello @Roberto_Gomez

Welcome to our community and thank you for trying out Backendless.

Please provide your applicationId.