doctrine:migrations:diff Generate a migration by comparing your current database to your mapping information.
doctrine:migrations:diffis one is the same new migration. And then, of course, the script
doctrine:migrations:migratethrows error that the field is already there. For the first migration was the insert fields, and the second is insert.
doctrine_migrations: dir_name: '%kernel.project_dir%/src/Migrations' # namespace is arbitrary but should be different from App\Migrations # as migrations classes should NOT be autoloaded namespace: App\Migrations
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