Fatal error: Uncaught Error: Interface "Kreait\Firebase\JWT\Action\CreateCustomToken\Handler" not found in C:\xampp\htdocs\www\prohelp\vendor\kreait\firebase-tokens\src\JWT\Action\CreateCustomToken\WithLcobucciV3JWT.php:15 Stack trace: #0 {main} thrown in C:\xampp\htdocs\www\prohelp\vendor\kreait\firebase-tokens\src\JWT\Action\CreateCustomToken\WithLcobucciV3JWT.php on line 15