Exception: Service invoked too many times

[Justin Bledsoe]

I'm very much a newbie when it comes to Google Apps Script and would love any guidance.  I developed a Google Form that emails the information to a designated recipient.  Essentially it is a Digital School Nurse Pass.  I am getting the following error maybe once a day.  In a typical day there are about 20 entries via the Google Form so I am no where near the limit.  I'm assuming my coding needs to be tweaked.  The error message also goes away after about 5 minutes.

Error Message

Aug 31, 2023, 3:06:01 PM Error Exception: Service invoked too many times for one day: premium email.
    at digitalPass(Code:43:16)
    at getFormURL(Code:28:1)

Code

function getFormURL(){           //Finds the name of the sheet connected to the Google Form
let ss = SpreadsheetApp.getActiveSpreadsheet();
let sheets = ss.getSheets();

for (let sheet of sheets) {
    let sheetName = sheet.getName();
    let formUrl = sheet.getFormUrl();
    if (formUrl) {
      var sheetForm = sheetName;
    }
}
digitalPass(sheetForm);
}


function digitalPass(sheetForm) {          //Pulls the Google Form Info into an Array and sends email
  var sheet = SpreadsheetApp.getActiveSpreadsheet();
  var ss = sheet.getSheetByName(sheetForm);
  var ab = sheet.getSheetByName('Settings');
  var lastrow = ss.getLastRow();

  var passArray = ss.getRange("A2:G"+lastrow).getValues();
  var recipient = ab.getRange("A3").getValue();

  for (i=0;i<passArray.length;i++){
    if (passArray[i][6]==""){
      GmailApp.sendEmail(recipient,passArray[i][1]+" - Nurse Pass","",{htmlBody:'<b>Date/Time - </b>' + passArray[i][0] + '<br><b>Student Name - </b>' + passArray[i][1] + '<br><b>Sending Staff Member - </b>' + passArray[i][2] + '<br><b>Homeroom Teacher - </b>' + passArray[i][3] + '<br><b>Reason - </b>' + passArray[i][4] + '<br><b>Other Details - </b>' + passArray[i][5]});
      var insertDone = ss.getRange("G" + (i+2)).setValue("Email Sent");
    }
  }
}