Can you break this down into more detail? You talk about Zapier, Notion, Drafts (an action), document moves and notifications. But there is nothing to explain the detail of how this all fits together.
Also when you refer to an alert, is this an alert or a notification? They are different things.
Knowing exactly what action you are using is helpful to troubleshoot. If it is this one, it has an alert scripted in it for troubleshooting purposes. You can comment out or remove the line alert(hookURL); in the script if you do not want that in your installation version. That action was meant as an example, not a final action for use as-is.