Facebook notifications API: “This method must be called with an app access_token”

Question

I am trying to send a Facebook notification from my app using Graph API Explorer. So I have selected my app, POST, and entered this string after the /

Answer 1

• Change your app secret ASAP, you shouldn't include private info in these questions
• Then, check the advanced settings of your app and make app type is set to 'Web', not to 'native/desktop' - if it's set to native/desktop the app secret isn't trusted and calls which need an app access token will fail.