Fatal error: Uncaught Error: Interface 'Silex\ServiceProviderInterface' not found in /home/ys726927/salosen.com/public_html/app/Plugin/Api/ApiServiceProvider.php:8 Stack trace: #0 /home/ys726927/salosen.com/public_html/vendor/composer/ClassLoader.php(571): include() #1 /home/ys726927/salosen.com/public_html/vendor/composer/ClassLoader.php(428): Composer\Autoload\includeFile('/home/ys726927/...') #2 [internal function]: Composer\Autoload\ClassLoader->loadClass('Plugin\\Api\\ApiS...') #3 [internal function]: spl_autoload_call('Plugin\\Api\\ApiS...') #4 /home/ys726927/salosen.com/public_html/src/Eccube/DependencyInjection/Compiler/AutoConfigurationTagPass.php(42): is_subclass_of('Plugin\\Api\\ApiS...', 'Doctrine\\Common...') #5 /home/ys726927/salosen.com/public_html/src/Eccube/DependencyInjection/Compiler/AutoConfigurationTagPass.php(35): Eccube\DependencyInjection\Compiler\AutoConfigurationTagPass->configureDoctrineEventSubscriberTag(Object(Symfony\Component\DependencyInjection\Definition)) #6 /home/ys726927/salosen.com/pub in /home/ys726927/salosen.com/public_html/app/Plugin/Api/ApiServiceProvider.php on line 8