google-spreadsheet error: cannot read property of undefined

hi! i am newer with sailsJs. And now i want to modify a google spreadsheet with nodeJs(using sailsJs). This is my code:

var GoogleSpreadsheet = require("google-spreadsheet");
var my_sheet = new GoogleSpreadsheet('<1Oaxk4rq2W6EhpE0sIP2ZLDcqeBIm-c7RB1Cb5Jyst44>');
/*
var creds = {
client_email: '[e-mail]',
private_key: ''
 }
*/
var creds = require('google-generated-creds.json');

my_sheet.useServiceAccountAuth(creds, function(err){
// getInfo returns info about the sheet and an array or "worksheet" objects
my_sheet.getInfo( function( err, sheet_info ){
  if(err)
    res.send(err);
    console.log( sheet_info.title + ' is loaded' );
    // use worksheet object if you want to stop using the # in your calls

    var sheet1 = sheet_info.worksheets[0];
    sheet1.getRows( function( err, rows ){
        rows[0].colname = 'new val';
        rows[0].save(); //async and takes a callback
        rows[0].del();  //async and takes a callback
    });
 });

 // column names are set by google and are based
 // on the header row (first row) of your sheet
my_sheet.addRow( 2, { colname: 'col value'} );

my_sheet.getRows( 2, {
    start: 100,          // start index
    num: 100,              // number of rows to pull
    orderby: 'name'  // column to order results by
 }, function(err, row_data){
    // do something...
  });
  })

But i have this error: Cannot read property ‘title’ of undefined. Please, is there anyone who can help me to fix my problem? Thanks in advance

[omkarsk98]

@Syedayesha Please share the sheet with your service account. The code like that of @jtarre will start working.

[Syedayesha]

Eventhough I am getting the same error any help how to fix this…