Fatal error: Uncaught Error: Interface "Wikimedia\Telemetry\SamplerInterface" not found in /var/www/html/w/includes/libs/Telemetry/ProbabilisticSampler.php:13 Stack trace: #0 {main} thrown in /var/www/html/w/includes/libs/Telemetry/ProbabilisticSampler.php on line 13