symfony/symfony · error · LogicException

No extensions with configuration available for "%s".

Error message

No extensions with configuration available for "%s".

What it means

Thrown by AbstractConfigCommand::findExtension (used by debug:config / config:dump-reference) when the supplied name does not end with 'Bundle' and matches no kernel alias, no bundle name, and no registered container extension. The command tries to suggest a close match via levenshtein before throwing.

Source

Thrown at src/Symfony/Bundle/FrameworkBundle/Command/AbstractConfigCommand.php:156

            $distance = levenshtein($name, $extension->getAlias());

            if ($distance < $minScore) {
                $guess = $extension->getAlias();
                $minScore = $distance;
            }
        }

        if (!str_ends_with($name, 'Bundle')) {
            $message = \sprintf('No extensions with configuration available for "%s".', $name);
        } else {
            $message = \sprintf('No extension with alias "%s" is enabled.', $name);
        }

        if (isset($guess) && $minScore < 3) {
            $message .= \sprintf("\n\nDid you mean \"%s\"?", $guess);
        }

        throw new LogicException($message);
    }

    public function validateConfiguration(ExtensionInterface $extension, mixed $configuration): void
    {
        if (!$configuration) {
            throw new \LogicException(\sprintf('The extension with alias "%s" does not have its getConfiguration() method setup.', $extension->getAlias()));
        }

        if (!$configuration instanceof ConfigurationInterface) {
            throw new \LogicException(\sprintf('Configuration class "%s" should implement ConfigurationInterface in order to be dumpable.', get_debug_type($configuration)));
        }
    }

    private function initializeBundles(): array
    {
        // Re-build bundle manually to initialize DI extensions that can be extended by other bundles in their build() method
        // as this method is not called when the container is loaded from the cache.
        $kernel = $this->getApplication()->getKernel();

View on GitHub (pinned to 698e28026c)

Solutions

  1. Check the 'Did you mean' suggestion in the error output and use that alias.
  2. Run `php bin/console debug:config` with no argument to list all available extension aliases.
  3. Ensure the bundle providing the extension is registered in config/bundles.php for the current environment.

Example fix

# before
php bin/console debug:config framwork

# after (use correct alias)
php bin/console debug:config framework
Defensive patterns

Strategy: validation

Validate before calling

use Symfony\Component\Console\Application;
// List valid aliases before invoking debug:config programmatically
$aliases = array_keys($container->getExtensions());
if (!in_array($name, $aliases, true)) {
    throw new \InvalidArgumentException(sprintf('Unknown extension "%s". Known: %s', $name, implode(', ', $aliases)));
}

Try / catch

try {
    $command->run(new ArrayInput(['name' => $name]), $output);
} catch (\LogicException $e) {
    if (str_contains($e->getMessage(), 'No extensions with configuration')) {
        // list aliases and prompt for correction
    }
    throw $e;
}

Prevention

When it happens

Trigger: Running `php bin/console debug:config <name>` where <name> is not a registered extension alias and does not end in 'Bundle' — e.g. a typo like 'framwork', or a name for a bundle/extension that isn't registered in this environment.

Common situations: Typo in the extension alias. The bundle providing the extension isn't registered in kernels.php / bundles.php. Querying an extension only available in another environment (e.g. dev-only bundle from prod).

Related errors

AI-assisted analysis of symfony/symfony@698e28026c (2026-08-06). Data as JSON: /api/errors/bd077aab3c4a0332. Report an issue: GitHub.