https://github.com/jeduan/cordova-plugin-facebook4/issues/817
https://enappd.com/blog/facebook-login-in-capacitor-apps-with-ionic-angular/128/
https://stackoverflow.com/questions/64670859/fbsdklog-fbsdkgraphrequestconnection-cannot-be-started-before-facebook-sdk-init
http://tomeko.net/online_tools/hex_to_base64.php
https://developers.facebook.com/apps/666811514385803/fb-login/settings/