Class Not found in AppKernel.php

Question

I'm trying to deploy my Symfony2 project. When I run the command

php app/console cache:clear --env=prod --no-debug

I get the following error:

PHP Fatal error: Class 'Acme\MainBundle\AcmeMainBundle' not found in /var/www/html/app/AppKernal.php on line 24

This is the in AppKernal.php

public function registerBundles()
{
    $bundles = array(
        ...
        new Acme\MainBundle\AcmeMainBundle(),
    );
    ...
}

It seems like there's a problem with the namespace?

Solution 1

If you are getting a bundle not found error in Symfony, in composer.json, modify the psr-4 section under autoload section like this.

"autoload": {
    "psr-4": {
        "": "src/"
    },
},

By doing so, you don't have to explicitly add the new bundle namespaces when you create a new bundle.

Solution 2

Got the same problem. I've just deleted my vendor folder

rm -rf vendor

and relaunch a composer update.. then everything was fine

composer update

Solution 3

If this happened in Symfony 3 (I haven't tested this in symfony 2),

1. Make sure your bundle is registered in AppKernal.php as:

   public function registerBundles()
   {
       $bundles = array(
           ...
           new YourBundle\YourBundle(),
       );
       ...
   }
   

2. Check if you've updated composer.json

   "autoload": {
       "psr-4": {
           "AppBundle\\": "src/AppBundle",
           "YourBundle\\": "src/YourBundle"
       },
       "classmap": [ "app/AppKernel.php", "app/AppCache.php" ]
   },
   

3. Run composer update from your console

Solution 4

Had the same problem after adding a bundle with the code generator with Symfony 3.2. I had to add this new bundle in the autoload section of composer.json after the AppBundle :

(...)
"autoload": {
    "psr-4": {
        "AppBundle\\": "src/AppBundle",
        "CoreBundle\\": "src/CoreBundle"
    },
(...)

Solution 5

Turns out i needed to add this to the autoloader. Thanks @DevZer0's comment.

$loader->add('Acme', __DIR__ . '/../src');

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