server:run Exception There are no commands defined in the “server” namespace

Question

When I run the server using php bin/console server:run I get the following error. There are no commands defined in the \"server\" namespace.

<

Answer 1

As @Barh says, you must have APP_ENV=dev in your .env file.

Otherwise Symfony 4 will not be runnable in dev mode.

Answer 2

For symfony 4 and more you should type php -S 127.0.0.1:8000 -t public to start the server

Answer 3

As I mentioned in my comment, in S3.3 the server commands have been moved to their own WebServerBundle. Some editing of AppKernel.php is required to activate the bundle. I suspect that many other developers might run into this once 3.3 is actually released and people try upgrading.

I make no promises but try updating AppKernel.php with:

    if (in_array($this->getEnvironment(), ['dev', 'test'], true)) {
        $bundles[] = new Symfony\Bundle\DebugBundle\DebugBundle();
        $bundles[] = new Symfony\Bundle\WebProfilerBundle\WebProfilerBundle();
        $bundles[] = new Sensio\Bundle\DistributionBundle\SensioDistributionBundle();

        if ('dev' === $this->getEnvironment()) {
            $bundles[] = new Sensio\Bundle\GeneratorBundle\SensioGeneratorBundle();
            $bundles[] = new Symfony\Bundle\WebServerBundle\WebServerBundle();
        }
    }

I don't have a good test project to try it on but at least the commands should show up.

And in case anyone is wondering, all I did was to install a fresh development project and poked around a bit.

composer create-project symfony/framework-standard-edition s33 "3.3.*" --stability=dev

I also found this but it does not mention the need to update AppKernel.php http://symfony.com/blog/new-in-symfony-3-3-webserverbundle

From the upgrade guide: https://github.com/symfony/symfony/blob/3.4/UPGRADE-3.3.md

The server:run, server:start, server:stop and server:status console commands have been moved to a dedicated bundle. Require symfony/web-server-bundle in your composer.json and register Symfony\Bundle\WebServerBundle\WebServerBundle in your AppKernel to use them.

As long as your composer.json has symfony/symfony in it then there is no need to add the web server bundle to it. Just need to adjust the AppKernel file.

Answer 4

you can put this:

  php -S localhost: 8000 -t public

or if you are working on symfony 4.x try this command line in your browser:

  symfony server: start

don't forget to install symfony CLI before this start from this:

  https://symfony.com/download

Answer 5

Type:

php bin/console

You'll see all the commands allowed.

If you want to use the server commands you should install it typing on your project:

composer require server --dev

run again

php bin/console

and you should be able to see it and use it.

Answer 6

Since symfony 4.2 and newer, theres is some changes so, to works you have to do this :

• 1: composer require symfony/web-server-bundle --dev
• 2: php bin\console --env=dev server:run