Invalid kay hash. The key hash ********************* does not match any stored key hastes. Configure your app key hashes at https://developers.facebook.com/apps/****************/

If you're getting an error like this , just copy the key hash in the error and then ,

1. Go to your meta developer console .
2. Select your app .
3. Under the platform where you have previously added your key hashes ( ex : android ) paste the key hash and save it .

Then give it a try using your mobile device . It'll be working fine .