Fatal error: Uncaught Error: Interface "OpenTelemetry\API\Metrics\ObserverInterface" not found in C:\xampp\htdocs\ducev\vendor\open-telemetry\sdk\Metrics\MetricRegistry\MultiObserver.php:15 Stack trace: #0 {main} thrown in C:\xampp\htdocs\ducev\vendor\open-telemetry\sdk\Metrics\MetricRegistry\MultiObserver.php on line 15