Facebook App : This must be derived from Canvas URL, Secure Canvas URL

Question

Hi I wan\'t to create a facebook app to use it for the auth in my new site locally installed(my machine),but from yesterday I don\'t succeed to install it and use it, all time I

Answer 1

In my case the problem was I hadn't completed the "+ Add Platform > Website" section. Once I did that the contents of App Domains became valid and the error went away.