Fatal error: Uncaught Error: Class 'Symfony\Component\Cache\Adapter\AbstractAdapter' not found in /var/www/vendor/symfony/cache/Adapter/ApcuAdapter.php:21 Stack trace: #0 /var/www/vendor/composer/ClassLoader.php(444): include() #1 /var/www/vendor/composer/ClassLoader.php(322): Composer\Autoload\includeFile('/var/www/vendor...') #2 [internal function]: Composer\Autoload\ClassLoader->loadClass('Symfony\\Compone...') #3 [internal function]: spl_autoload_call('Symfony\\Compone...') #4 /var/www/vendor/symfony/framework-bundle/FrameworkBundle.php(73): class_exists('Symfony\\Compone...') #5 /var/www/vendor/composer/ClassLoader.php(444): include('/var/www/vendor...') #6 /var/www/vendor/composer/ClassLoader.php(322): Composer\Autoload\includeFile('/var/www/vendor...') #7 [internal function]: Composer\Autoload\ClassLoader->loadClass('Symfony\\Bundle\\...') #8 /var/www/src/Kernel.php(33): spl_autoload_call('Symfony\\Bundle\\...') #9 /var/www/vendor/symfony/http-kernel/Kernel.php(446): App\Kernel->registerBundles() #10 /var/www/vendo in /var/www/vendor/symfony/cache/Adapter/ApcuAdapter.php on line 21