title: Getting Error- Invalid mail Attachment
body: <p>I am trying to send email with excel file attachment. But getting invalid mail attachment error.</p>
  
  <p>Please help me.</p>
  
  <p>Here is my code-</p>
  
  <p><img src="https://i.stack.imgur.com/FAfCJ.png" alt="enter image description here"></p>