${ in shell script introduce massive warning in Spinnaker UI (Failed to evaluate ... not found)

Issue

When running a shell script in a stage, the Spinnaker UI and logs show a massive warning message, but everything works fine. Failed to evaluate ... not found A screenshot is below:

Cause

End users seeing this issue may discover that it is tied to the shell scripts include the ${} notation. For example, ${n}. The format ${} is the same as a Spring Expression Language (SpEL) expression. Orca is confused because it sees ${n} as an expression, and there is no n in the context.