If you start learning Yii framework then you can catch popular error: Class ‘app\controllers\EntryForm’ not found
Solution (9 line in SiteController.php) ↓
namespace app\controllers; use Yii; use yii\filters\AccessControl; use yii\web\Controller; use yii\filters\VerbFilter; use app\models\LoginForm; use app\models\ContactForm; use app\models\EntryForm;
Just add: “use app\models\EntryForm;”