Symfony2 : Error Log

An exception has been thrown during the compilation of a template ("You must add ASFTaskBundle to the assetic.bundle config to use the {% stylesheets %} tag in ASFTaskBundle:Default:template-base.html.twig. (currently enabled: ASFPembedaBundle)") in "ASFTaskBundle:Default:template-base.html.twig". 

 

add to the app/config/config.yml

 

 assetic:
    debug:          %kernel.debug%
    use_controller: false
#    bundles:        [ASFPembedaBundle]
    bundles:
           - ASFPembedaBundle
           - ASFTaskBundle
    #java: /usr/bin/java

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