Fatal error: Uncaught Error: Interface 'Psy\VersionUpdater\Checker' not found in D:\svn\epic-site(사전예약)\default\vendor\psy\psysh\src\VersionUpdater\GitHubChecker.php:16 Stack trace: #0 {main} thrown in D:\svn\epic-site(사전예약)\default\vendor\psy\psysh\src\VersionUpdater\GitHubChecker.php on line 16