Fatal error: Uncaught Error: Interface "Psy\VersionUpdater\Downloader" not found in /home/demohost/hospital.demohost.in/vendor/psy/psysh/src/VersionUpdater/Downloader/CurlDownloader.php:18 Stack trace: #0 {main} thrown in /home/demohost/hospital.demohost.in/vendor/psy/psysh/src/VersionUpdater/Downloader/CurlDownloader.php on line 18