Invalid key hash. The key hash _KEY_ does not match any stored key hashes. Configure your app key hashes at https://developers.facebook.com/apps/
I have configured all things fine for the first time my app was worked perfectly but today it's giving me this error.
I have tested facebook configuration that is fine. Search whole day but not got any solution they are saying remove configured settings and delete the app from Developer account and then again create a fresh configuration. I have done it also in one-day same issue occur.
How can I resolve this?