multiples fallos en symfony al mostrar pagina

[rufus]

routing de MDW\DemoBundle

Código HTML:

MDWDemoBundle_homepage:
    pattern:  /hello/{name}
    defaults: { _controller: MDWDemoBundle:Default:index }
    
articulos:
    pattern: /articulos
    defaults: { _controller: MDWDemoBundle:Default:articulos }
 

routing.yml de app/config

Código HTML:

MDWDemoBundle:
    resource: "@MDWDemoBundle\Resources\config\routing.yml"
    prefix:   /
 
# Internal routing configuration to handle ESI
#_internal:
#resource: "@FrameworkBundle\Resources\config\routing\internal.xml"
#prefix:   /_internal