src/Neutrino/Providers/Session.php
public function registering()
    {
        $di = $this->getDI();

        $di->set(Services::SESSION_BAG, Bag::class);

        $di->setShared(Services::SESSION, function () {
            /** @var \Phalcon\DiInterface $this */

            $sessionConfig = $this->getShared(Services::CONFIG)->session;

            if (!isset($sessionConfig->adapter)) {
                if (!isset($sessionConfig->stores[$sessionConfig->default])) {
                    throw new \RuntimeException("Session store {$sessionConfig->default} not found in stores");
                }

                $sessionConfig = $sessionConfig->stores[$sessionConfig->default];
            }

            $adapter = $sessionConfig->adapter;

            switch ($adapter){
                case 'Aerospike':
                case 'Database':
                case 'HandlerSocket':
                case 'Mongo':
                case 'Files':
                case 'Libmemcached':
                case 'Memcache':
                case 'Redis':
                    $class = 'Phalcon\Session\Adapter\\' . $adapter;
                    break;
                case FilesAdapter::class:
                case LibmemcachedAdapter::class:
                case MemcacheAdapter::class:
                case RedisAdapter::class:
                    $class = $adapter;
                    break;
                default:
                    $class = $adapter;

                    if(!class_exists($adapter)){
                        throw new \RuntimeException("Session Adapter $class not found.");
                    }
            }

            try {
                $options = [];
                if (!empty($sessionConfig->options)) {
                    $options = $sessionConfig->options->toArray();
                }
                /** @var \Phalcon\Session\Adapter|\Phalcon\Session\AdapterInterface $session */
                $session = new $class($options);
            } catch (\Throwable $e) {
                throw new \RuntimeException("Session Adapter $class construction fail.", $e);
            }

            $session->start();

            return $session;
        });
    }
public function registering()
    {
        $di = $this->getDI();

        $di->set(Services::SESSION_BAG, Bag::class);

        $di->setShared(Services::SESSION, function () {
            /** @var \Phalcon\DiInterface $this */

            $sessionConfig = $this->getShared(Services::CONFIG)->session;

            if (!isset($sessionConfig->adapter)) {
                if (!isset($sessionConfig->stores[$sessionConfig->default])) {
                    throw new \RuntimeException("Session store {$sessionConfig->default} not found in stores");
                }

                $sessionConfig = $sessionConfig->stores[$sessionConfig->default];
            }

            $adapter = $sessionConfig->adapter;

            switch ($adapter){
                case 'Aerospike':
                case 'Database':
                case 'HandlerSocket':
                case 'Mongo':
                case 'Files':
                case 'Libmemcached':
                case 'Memcache':
                case 'Redis':
                    $class = 'Phalcon\Session\Adapter\\' . $adapter;
                    break;
                case FilesAdapter::class:
                case LibmemcachedAdapter::class:
                case MemcacheAdapter::class:
                case RedisAdapter::class:
                    $class = $adapter;
                    break;
                default:
                    $class = $adapter;

                    if(!class_exists($adapter)){
                        throw new \RuntimeException("Session Adapter $class not found.");
                    }
            }

            try {
                $options = [];
                if (!empty($sessionConfig->options)) {
                    $options = $sessionConfig->options->toArray();
                }
                /** @var \Phalcon\Session\Adapter|\Phalcon\Session\AdapterInterface $session */
                $session = new $class($options);
            } catch (\Throwable $e) {
                throw new \RuntimeException("Session Adapter $class construction fail.", $e);
            }

            $session->start();

            return $session;
        });
    }
Start the session the first time some component request the session service

@throws \RuntimeException

@return void