TypeError: Cannot read property 'range' of undefined at onformsubmit(Code:10:17)

I am getting this error when running :TypeError: Cannot read property 'range' of undefined at onformsubmit(Code:10:17) I have installed the onformsubmit trigger but it is not working. What is not working here?

function onformsubmit(e) {
  var ss = SpreadsheetApp.getActiveSpreadsheet();

  var range = e.range;
  var row = range.getRow();
  var sheet = range.getSheet();

  sheet.getRange(row, 17).setFormula("=if($O"+row+"=\"UZS\",index(googlefinance(\"currency:UZSUSD\",\"price\",$B"+row+"),2,2)*$P"+row+",if($O"+row+"=\"EUR\",index(googlefinance(\"currency:EURUSD\",\"price\",$B"+row+"),2,2)*$P"+row+",$P"+row+"))");

}