When the query returns no results, a callout block is shown with the message "The query returned no results".

I'd love more control of the output for this.
We could have an error and empty line in the query:

 ```todoist
 filter: "today"
 error: "There was a problem"
 empty: "No tasks for today"

or perhaps configure these in the plugin settings (although that makes the message the same for every usage of the plugin)