When I click on login with Facebook button, it is opening safari browser and getting closed immediately. Noticed error on the console.
App delegate method:
I have the same warning, but in Facebook Docs there is an answer.
This is an Xcode warning indicating the the canOpenURL: call returned false. As long as you have configured the LSApplicationQueriesSchemes entry in your plist as described above, you can ignore this warning
https://developers.facebook.com/docs/ios/ios9