route.get() requires callback functions but got a object undefined at route.(anonymous function)
 I checked and tried similar questions like this,but didn't fix the issue.I'm getting route.get() requires callback functions but got a object undefined at route.(anonymous function)   drug.server.policy.js   'use strict' ;       /**      * Module dependencies      */      var  acl =  require ( 'acl' );       // Using the memory backend      acl =  new  acl ( new  acl . memoryBackend ());       /**      * Invoke Drugs Permissions      */      exports . invokeRolesPolicies =  function  ()  {        acl . allow ([{          roles :  [ 'admin' ],          allows :  [{            resources :  '/api/drugs' ,            permissions :  '*'          },  {            resources :  '/api/drugs/:drugId' ,            permissions :  '*'          }]        },  {          roles :  [ 'user' ],          allows :  [{            resources :  '/api/drugs' ,            permissions :  [ 'get' ,  'post' ]          ...