Fatal error: Uncaught Error: Interface 'Psr\Container\ContainerInterface' not found in /var/www/ejournalpoltekbang/lib/pkp/lib/vendor/illuminate/contracts/Container/Container.php:8 Stack trace: #0 /var/www/ejournalpoltekbang/lib/pkp/lib/vendor/composer/ClassLoader.php(444): include() #1 /var/www/ejournalpoltekbang/lib/pkp/lib/vendor/composer/ClassLoader.php(322): Composer\Autoload\includeFile() #2 [internal function]: Composer\Autoload\ClassLoader->loadClass() #3 /var/www/ejournalpoltekbang/lib/pkp/lib/vendor/illuminate/container/Container.php(15): spl_autoload_call() #4 /var/www/ejournalpoltekbang/lib/pkp/lib/vendor/composer/ClassLoader.php(444): include('/var/www/ejourn...') #5 /var/www/ejournalpoltekbang/lib/pkp/lib/vendor/composer/ClassLoader.php(322): Composer\Autoload\includeFile() #6 [internal function]: Composer\Autoload\ClassLoader->loadClass() #7 /var/www/ejournalpoltekbang/lib/pkp/lib/vendor/illuminate/database/Capsule/Manager.php(32): spl_autoload_call() #8 /var/www/ejournalpoltekbang/lib/pkp/classes/services/ in /var/www/ejournalpoltekbang/lib/pkp/lib/vendor/illuminate/contracts/Container/Container.php on line 8