Fatal error: Uncaught Error: Interface "Amp\Sync\Semaphore" not found in /home/defenders/public_html/0255_projects/mpangaji_ms/vendor/amphp/sync/src/Mutex.php:11 Stack trace: #0 {main} thrown in /home/defenders/public_html/0255_projects/mpangaji_ms/vendor/amphp/sync/src/Mutex.php on line 11