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.

When I run php bin/console command I egt the following output. Which does't show any server: commands.

Symfony 3.3.0-DEV (kernel: app, env: dev, debug: true)  Usage:   command [options] [arguments]  Options:   -h, --help            Display this help message   -q, --quiet           Do not output any message   -V, --version         Display this application version       --ansi            Force ANSI output       --no-ansi         Disable ANSI output   -n, --no-interaction  Do not ask any interactive question   -e, --env=ENV         The environment name [default: "dev"]       --no-debug        Switches off debug mode   -v|vv|vvv, --verbose  Increase the verbosity of messages: 1 for normal output, 2 for more verbose output and 3 for debug  Available commands:   about                                   Displays information about the current project   help                                    Displays help for a command   list                                    Lists commands  app   app:download-beameemail                 download beame emails.   app:download-businessunits              download businessunits.   app:download-drivers                    download drivers.   app:download-fleets                     download fleets.   app:download-fmpositions                download fm_positions.   app:download-fmtrips                    download fm_trips.   app:download-fmunits                    download fm_units.   app:download-skypositions               download skytrack_positions.   app:download-skyunits                   download skytrack_units.   app:download-vehicles                   download vehicles.  assets   assets:install                          Installs bundles web assets under a public web directory  cache   cache:clear                             Clears the cache   cache:pool:clear                        Clears cache pools   cache:warmup                            Warms up an empty cache  config   config:dump-reference                   Dumps the default configuration for an extension  debug   debug:config                            Dumps the current configuration for an extension   debug:container                         Displays current services for an application   debug:event-dispatcher                  Displays configured listeners for an application   debug:router                            Displays current routes for an application   debug:swiftmailer                       [swiftmailer:debug] Displays current mailers for an application   debug:translation                       Displays translation messages information   debug:twig                              Shows a list of twig functions, filters, globals and tests  doctrine   doctrine:cache:clear-collection-region  Clear a second-level cache collection region.   doctrine:cache:clear-entity-region      Clear a second-level cache entity region.   doctrine:cache:clear-metadata           Clears all metadata cache for an entity manager   doctrine:cache:clear-query              Clears all query cache for an entity manager   doctrine:cache:clear-query-region       Clear a second-level cache query region.   doctrine:cache:clear-result             Clears result cache for an entity manager   doctrine:database:create                Creates the configured database   doctrine:database:drop                  Drops the configured database   doctrine:database:import                Import SQL file(s) directly to Database.   doctrine:ensure-production-settings     Verify that Doctrine is properly configured for a production environment.   doctrine:generate:crud                  [generate:doctrine:crud] Generates a CRUD based on a Doctrine entity   doctrine:generate:entities              [generate:doctrine:entities] Generates entity classes and method stubs from your mapping information   doctrine:generate:entity                [generate:doctrine:entity] Generates a new Doctrine entity inside a bundle   doctrine:generate:form                  [generate:doctrine:form] Generates a form type class based on a Doctrine entity   doctrine:mapping:convert                [orm:convert:mapping] Convert mapping information between supported formats.   doctrine:mapping:import                 Imports mapping information from an existing database   doctrine:mapping:info                      doctrine:query:dql                      Executes arbitrary DQL directly from the command line.   doctrine:query:sql                      Executes arbitrary SQL directly from the command line.   doctrine:schema:create                  Executes (or dumps) the SQL needed to generate the database schema   doctrine:schema:drop                    Executes (or dumps) the SQL needed to drop the current database schema   doctrine:schema:update                  Executes (or dumps) the SQL needed to update the database schema to match the current mapping metadata.   doctrine:schema:validate                Validate the mapping files.  fos   fos:js-routing:debug                    Displays currently exposed routes for an application   fos:js-routing:dump                     Dumps exposed routes to the filesystem  generate   generate:bundle                         Generates a bundle   generate:command                        Generates a console command   generate:controller                     Generates a controller  lint   lint:twig                               Lints a template and outputs encountered errors   lint:xliff                              Lints a XLIFF file and outputs encountered errors   lint:yaml                               Lints a file and outputs encountered errors  router   router:match                            Helps debug routes by simulating a path info match  security   security:check                          Checks security issues in your project dependencies   security:encode-password                Encodes a password.  swiftmailer   swiftmailer:email:send                  Send simple email message   swiftmailer:spool:send                  Sends emails from the spool  translation   translation:update                      Updates the translation file 

I've tried to fix it by running composer require symfony/symfony and composer update but it still doesn't show. Is there anything else that I can try?

Edit below is my php info from php -version

PHP 7.0.15-0ubuntu0.16.04.4 (cli) ( NTS ) Copyright (c) 1997-2017 The PHP Group Zend Engine v3.0.0, Copyright (c) 1998-2017 Zend Technologies     with Zend OPcache v7.0.15-0ubuntu0.16.04.4, Copyright (c) 1999-2017, by Zend Technologies     with Xdebug v2.4.0, Copyright (c) 2002-2016, by Derick Rethans 

EDIT 2

the directory vendor\symfon\symfony\src\Symfony\Bundle\FrameworkBundle\Command exists and contains the following files

AboutCommand.php AbstractConfigCommand.php AssetsInstallCommand.php CacheClearCommand.php CachePoolClearCommand.php CacheWarmupCommand.php ConfigDebugCommand.php ConfigDumpReferenceCommand.php ContainerAwareCommand.php ContainerDebugCommand.php EventDispatcherDebugCommand.php RouterDebugCommand.php RouterMatchCommand.php TranslationDebugCommand.php TranslationUpdateCommand.php WorkflowDumpCommand.php XliffLintCommand.php YamlLintCommand.php 

Answer 1

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 2

run this command before starting the server.

composer require symfony/web-server-bundle --dev