It seems that you have done development of the current flow in the draft mode. As you are on draft mode, it doesn't show any configuration errors and it gets executed. If you want to finalize the flow, then you need to disable the draft mode and you need to resolve the configuration errors. As per the error, it seems that you have not defined the flow action for the outside of the connector in the respective assignments. Please add the flow-actions for the respective assignments which might resolve the issue.