I get this error, even though I added this scope to my apps-script project manifest.

What else is missing?

You do not have permission to call ScriptApp.getProjectTriggers. Required permissions: https://www.googleapis.com/auth/script.scriptapp

CodePudding user response：

As simple triggers fire automatically, without asking the user for authorization, they are subject to several restrictions that are explained in the "Restrictions" section of the following Developers Center page called "Simple Triggers" [1].

It's worth considering if any of these restrictions have an impact on your application.

[1] https://developers.google.com/apps-script/guides/triggers#restrictions