Q: After update Symfony throws weird errors Today i decided to downlaod the FOS user-bundle, i used the following command "composer require friendsofsymfony/user-bundle "~2.0@dev"" everything was downloaded, so I went to my website and there is this error:
Attempted to load class "MonologBundle" from namespace "Symfony\Bundle\MonologBundle".
Did you forget a "use" statement for another namespace?

I have the bundle in the vendor folder, tried with cleaning the cache, still same. Any thoughts?
Stack:
in AppKernel.php line 14
at AppKernel->registerBundles() in bootstrap.php.cache line 2565
at Kernel->initializeBundles() in bootstrap.php.cache line 2394
at Kernel->boot() in bootstrap.php.cache line 2426
at Kernel->handle() in app_dev.php line 28
at {main}() in app_dev.php line 0


A: The problem was in composer.json, monolog wasn't included and so it wasn't autoloaded.
Solution: Download composer.json from https://github.com/symfony/symfony-standard
