Fatal error: Uncaught Error: Interface "Webauthn\Event\WebauthnEvent" not found in C:\xampp\htdocs\bilipoa\vendor\web-auth\webauthn-lib\src\Event\BackupEligibilityChangedEvent.php:18 Stack trace: #0 {main} thrown in C:\xampp\htdocs\bilipoa\vendor\web-auth\webauthn-lib\src\Event\BackupEligibilityChangedEvent.php on line 18