Emissary Executor command error

[kotalakshman]

This step is in Error state with this message: task 'covertype-classifier-training-n9gws.bigquery-query' errored: when using the emissary executor you must either explicitly specify the command, or list the image's command in the index: https://argoproj.github.io/argo-workflows/workflow-executors/#emissary-emissary

[terrytangyuan]

Take a look at the error message: "you must either explicitly specify the command, or list the image's command in the index: https://argoproj.github.io/argo-workflows/workflow-executors/#emissary-emissary"