Fatal error: Uncaught Error: Interface "Amp\Sync\Semaphore" not found in C:\xampp\htdocs\Locsy\vendor\amphp\sync\src\ThreadedSemaphore.php:17 Stack trace: #0 {main} thrown in C:\xampp\htdocs\Locsy\vendor\amphp\sync\src\ThreadedSemaphore.php on line 17