Facebook login

Hello i'm trying to add facebook login function to my web page i followed this instruction https://www.codecheef.org/article/oauth-login-using-facebook-google-twitter-and-github-with-laravel-socialite-package i created fb developer account and i added FB ID and FB SECRET to my .env file but now when i click on login page is refreshing and i'm getting this url https://page.io/auth/social#= and it not working... i searched a lot and didn't fined anything about this url error