The error suggest a configuration issue. DSS is not correctly communicating with the Kubernetes cluster. Could you please verify that a default cluster is set by going to Settings > Containerized execution > Default cluster or it can be set at the project level by going to Project settings > Cluster selection > Kubernetes cluster selection.
You can set a Spark config to your recipe from the recipe page's "Advanced" > "Spark config".
If this doesn't help, please open a support ticket with instance diagnostics so we can further assist.