我想生成一个新的包，但是它说命令 generate:bundle 没有定义。
当我尝试这个命令时：
php app/console list --raw
生成：未显示捆绑包...
命令输出：
help Displays help for a command
list Lists commands
assetic:dump Dumps all assets to the filesystem
assets:install Installs bundles web assets under a public web directory
cache:clear Clears the cache
cache:warmup Warms up an empty cache
config:dump-reference Dumps default configuration for an extension
container:debug Displays current services for an application
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-result Clears result cache for an entity manager
doctrine:database:create Creates the configured databases
doctrine:database:drop Drops the configured databases
doctrine:ensure-production-settings Verify that Doctrine is properly configured for a production environment.
doctrine:generate:entities Generates entity classes and method stubs from your mapping information
doctrine:mapping:convert Convert mapping information between supported formats.
doctrine:mapping:import Imports mapping information from an existing database
doctrine:mapping:info Shows basic information about all mapped entities
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 Validates the doctrine mapping files
fos:user:activate Activate a user
fos:user:change-password Change the password of a user.
fos:user:create Create a user.
fos:user:deactivate Deactivate a user
fos:user:demote Demote a user by removing a role
fos:user:promote Promotes a user by adding a role
generate:doctrine:entities Generates entity classes and method stubs from your mapping information
init:acl Mounts ACL tables in the database
init:jms-secure-random
orm:convert:mapping Convert mapping information between supported formats.
router:debug Displays current routes for an application
router:dump-apache Dumps all routes as Apache rewrite rules
router:match Helps debug routes by simulating a path info match
swiftmailer:spool:send Sends emails from the spool
translation:update Updates the translation file
twig:lint Lints a template and outputs encountered errors
这里发生了什么？