Fatal error: Uncaught Error: Interface "OpenTelemetry\API\Metrics\ObserverInterface" not found in C:\xampp\htdocs\mflux\vendor\open-telemetry\sdk\Metrics\MetricRegistry\NoopObserver.php:12 Stack trace: #0 {main} thrown in C:\xampp\htdocs\mflux\vendor\open-telemetry\sdk\Metrics\MetricRegistry\NoopObserver.php on line 12