Fatal error: Uncaught Error: Interface "Amp\Sync\Semaphore" not found in /var/www/html/immobilier-des-particuliers.fr/vendor/amphp/sync/src/Mutex.php:13 Stack trace: #0 {main} thrown in /var/www/html/immobilier-des-particuliers.fr/vendor/amphp/sync/src/Mutex.php on line 13