Fatal error: Uncaught Error: Class 'yii\base\BaseObject' not found in /var/www/html/autocar/vendor/yiisoft/yii2/caching/MemCacheServer.php:21 Stack trace: #0 {main} thrown in /var/www/html/autocar/vendor/yiisoft/yii2/caching/MemCacheServer.php on line 21