Fatal error: Uncaught Error: Interface "Kreait\Firebase\JWT\Contract\Keys" not found in C:\xampp\htdocs\www\prohelp\vendor\kreait\firebase-tokens\src\JWT\GooglePublicKeys.php:15 Stack trace: #0 {main} thrown in C:\xampp\htdocs\www\prohelp\vendor\kreait\firebase-tokens\src\JWT\GooglePublicKeys.php on line 15