About Google Apps Script MailApp.sendEmail Errors

function attachmentsToCsvFile(){
  varsheet=SpreadsheetApp.getActiveSpreadsheet().getSheetByName('Sheet1');
  // You could use now Date(); on its own but it will not look nice.
  vardate=Utilities.formatDate(newDate(), "GMT-4", "ddMMyyyy")
  variableendDate=date


  varcsvFileName=date+'.csv';
  vars = SpreadsheetApp.getActiveSpreadsheet().getSheetByName('sheet 1');
  varmaxColumn=ss.getLastColumn();
  varmaxRow=ss.getLastRow();
  vardata=ss.getRange(1,1,maxRow,maxColumn).getValues();
    if(data.length>1){
  varcsv="";
  for (varrow=0; row<data.length;row++){
    for (varcol=0; col<data[row].length;col++){
      if(data[row][col].toString().indexOf(",")!=-1){
        data[row][col]="\"+data[row][col]+"\";
      }
    }

    if(row<data.length-1){
      csv+=data[row].join(", ")+"\r\n";
    }
    else{
      csv+=data[row];
    }
  }
  csvFile=csv;
}

  var attachments = [{fileName:csvFileName, mimeType:'text/comma-separated- 
 values', content:csvFile}];
  try{
  MailApp.sendEmail("[email protected]", "CSV file", "CSV file", 
{attachments:attachments});
}catch(error) {throw newError("More meetingful error.");
}
}

[18-09-1101:37:34:638 HKT] Running
[18-09-1101:37:34:654HKT] SpreadsheetApp.getActiveSpreadsheet() [0 seconds]
[18-09-1101:37:34:762 HKT] Spreadsheet.getSheetByName ([Sheet 1]) [0.108 seconds]
[18-09-1101:37:34:763 HKT] Utilities.formatDate ([Mon Sep 10 10:37:34 PDT 2018, GMT-4, ddMMyyyy]) [0 seconds]
[18-09-1101:37:34:764 HKT] SpreadsheetApp.getActiveSpreadsheet() [0 seconds]
[18-09-1101:37:34:765 HKT] Spreadsheet.getSheetByName ([Sheet 1]) [0 seconds]
[18-09-1101:37:35:559HKT] Sheet.getLastColumn() [0.794 seconds]
[18-09-1101:37:35:795 HKT] Sheet.getLastRow() [0.236 seconds]
[18-09-1101:37:35:796 HKT] Sheet.getRange ([1,1,3146,9]) [0 seconds]
[18-09-1101:37:36:516 HKT] Range.getValues() [0.719 seconds]
[18-09-1101:37:38:403 HKT] MailApp.sendEmail([[email protected],CSV file,CSV file,{ attachments=[{fileName=10092018NYSE.csv,mimeType=text/comma-separated-values, content= Symbol, Description, Time, symbol, power, police, police, power,
A, Agilent Technology}]]...) [0.133 seconds]
[18-09-1101:37:38:413 HKT] Run successfully (total runtime 3.752 seconds)