You need to make your URL whitelist at the facebook app.
You can read more on https://www.facebook.com/help/community/question/?id=1278521772201326
https://stackoverflow.com/questions/37001004/facebook-login-message-url-blocked-this-redirect-failed-because-the-redirect
The required meta already exists. If you need anymore, you need to customize it to make personalize.
Best Regards
