Api Symfony 2, find methods doesn't work -

I have a problem with the AP bundle on Symphony 2. For example this method:

  $ UserRep = $ this-> M- & amp;; GetRepository ("CloudAdmBundle: AdmUser"); $ User = $ userRep-> Search (All);  

This causes: {"statusCode": 500, "statusText": "internal server error"}

I was dumping $ UserRep And does it look normal to have any idea?