Updating slides from sheet

I am trying to update slides from sheet. As simple as that.

1. I have a working script in sheet which updates the slide if I run it from the gscript editor
2. I want this script to run onEdit of specific cell in spreadsheet

3. So I add function

   function onEdit(e) {
     if ([e.range is what I want]){
       [update the slide using Slides.Presentations.batchUpdate]
   }
   

4. Upon changing the cell, I can see in my G Suite developer HUB an error message Request is missing required authentication credential. Expected OAuth 2 access token, login cookie or other valid authentication credential. See https://developers.google.com/identity/sign-in/web/devconsole-project.

I am very new in this environment and I only wanted to achieve something simple. What am I missing? Do I really need to register new OAuth2 client app in google cloud platform to connect one google product to another?