Resource Not Found while reportExecution via Visualize.js

We are trying to access the JasperSoft reports using Visualize.js api`s and are able to successfully fetch the InputControls , Sample Dashboards,  but getting resource not found exception only on report execution method . Do we need any permissionMask for report execution or there are some restrictions over execution . 

Resource : /organizations/organization_1/reports/Dsh_Outbound_Online_Hourly_Avg_Talktime

Also tried with Sample reports and response is still resource not found . 
Resource : /public/Samples/Reports/01._Geographic_Results_by_Segment_Report
Exception : Response : 

1. {message: "Resource 8bc23408-f2af-4374-9345-d52eb7e13abe not found.", errorCode: "resource.not.found",…}
   1. errorCode: "resource.not.found"
   2. message: "Resource 8bc23408-f2af-4374-9345-d52eb7e13abe not found."
   3. parameters: ["8bc23408-f2af-4374-9345-d52eb7e13abe"]
      1. 0: "8bc23408-f2af-4374-9345-d52eb7e13abe"
         
         Implementation : 

         visualize(

         {

         auth: {

         token: ********,

         preAuth: true,

         tokenName: "pp",

         }},

         function (v) {

         v("#dashboard").report({

         resource: "/public/Samples/Reports/01._Geographic_Results_by_Segment_Report",

         error: function(e) {

         console.log(e);

         }

         });});