The directories parameter is not a string or array for the 'app\controllers' namespace<br><pre>#0 [internal function]: Phalcon\Autoload\Loader->checkDirectories()
#1 [internal function]: Phalcon\Autoload\Loader->addNamespace()
#2 /var/www/api-dentinapp/app/config/loader.php(16): Phalcon\Autoload\Loader->setNamespaces()
#3 /var/www/api-dentinapp/public/index.php(44): include('...')
#4 {main}</pre>