How to attach an excel file to an email attachment (node-ews)?

Question

Node.js

Good afternoon!

I'm trying to attach a local excel file to an email attachment. Tell me what I'm doing wrong?

Attachments: {
        FileAttachment: [{
          Name: 'excelfile.xlsx',
          IsInline: false,
          ContentType: 'text/xlsx',
          ContentLocation: ''путь к файлу"
        }]
      }