PHP Fatal error:  Uncaught Symfony\Component\Debug\Exception\ClassNotFoundException: Attempted to load class "DoctrineFixturesBundle" from namespace "Doctrine\Bundle\FixturesBundle".

         Did you forget a "use" statement for another namespace? in /tmp/build_3ac4ddc4f69b0e8164cef8554cac9f16/app/AppKernel.php:30

         Stack trace:

         #0 /tmp/build_3ac4ddc4f69b0e8164cef8554cac9f16/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/Kernel.php(493): AppKernel->registerBundles()

         #1 /tmp/build_3ac4ddc4f69b0e8164cef8554cac9f16/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/Kernel.php(132): Symfony\Component\HttpKernel\Kernel->initializeBundles()

         #2 /tmp/build_3ac4ddc4f69b0e8164cef8554cac9f16/vendor/symfony/symfony/src/Symfony/Bundle/FrameworkBundle/Console/Application.php(64): Symfony\Component\HttpKernel\Kernel->boot()

         #3 /tmp/build_3ac4ddc4f69b0e8164cef8554cac9f16/vendor/symfony/symfony/src/Symfony/Component/Console/Application.php(148): Symfony\Bundle\FrameworkBundle\Console\Application->doRun(Object(Symfony\Component\Console\Input in /tmp/build_3ac4ddc4f69b0e8164cef8554cac9f16/app/AppKernel.php on line 30