AngularJs ui-router has error : http 404 -

i have issues of assigning controller using angularjs. following have:

.config(function($stateprovider, $urlrouterprovider, $oclazyloadprovider, $locationprovider) {     $stateprovider         .state('core', {             abstract:   true,             template:   '<ui-view ></ui-view>',             cache:      'false',             controller: 'corecontroller core',             data:       {                 authrequired: true             }          });      $locationprovider.html5mode(true);      $oclazyloadprovider.config({events: true}); }) 

and html:

 <base href="/" /> 

url :http://localhost:9000/customer

however,when eni receiving error on console: http 404 ; not found;