Need to put a Hyperlink in the Google Script , but it shows error Unexpected Identifier where tag is used

function sendEmail(fullName, email, newStage) {
  var firstName = fullName.split(" ")[0]
  var URL = "https://calendar.google.com/calendar/selfschedsstoken=UUsweS1BdS0zOFBXfGRlZmF1bHR8YjJhNmFkNTEwOWFlODZhODRiNGZhYjk4ZjE0N2EwOGY"
  switch (newStage) {
    case "Stage 1": 
     var email_subject= "Update ";
     var email_HTMLbody = "Hey " + firstName + "n nThank you for applying ! Upon reviewing your application, we would like to invite you to move forward with our interview process."+ "n nThe next step is to schedule a phone call with one of our mentors. The information we need from you can be found broken down below:" + "n n1).Please pick an interview time within the next two weeks that work for you. A link to our interview slots can be found <a href="https://calendar.google.com/calendar/selfsched?sstoken=UUsweS1BdS0zOFBXfGRlZmF1bHR8YjJhNmFkNTEwOWFlODZhODRiNGZhYjk4ZjE0N2EwOGY">here </a>
     +"n n2).Before your interview, an email will be sent out with a link to Google Meet for you to join 10 minutes prior. These links will be sent to the email you mentioned in your application form." ;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
     MailApp.sendEmail({
       to: email, 
       subject: email_subject,
       htmlBody: email_HTMLbody
     });
     break;
  }
}