Googlescript将PDF附加到电子邮件。获取服务器错误

Question

我的邮件脚本工作得很好但是当我尝试附加PDF时，整个世界都崩溃了。我收到错误“我们很抱歉，发生了服务器错误。请稍等一下再试一次”。

我也尝试了附件功能的各种迭代，每个都失败了。包括blob，文件，得到我的和喜欢（此时我已经变成了人类blob自己大声笑）。

请看一下这个功能。我真诚地希望有人可以帮助解决这个问题。有问题的部分是代码的最后5行（附件功能）。

我必须指出，虽然我们社区的各位成员帮助我建立了这个。感谢您的期待

function welcome(){
var hour = new Date().getHours();
var ss = SpreadsheetApp.getActiveSpreadsheet();
var sheets = ss.getSheets();
var length = sheets.length;
for( var i=0; i < length; i++) {
  var sheet = ss.getSheets()[i];
  var sheetName = sheet.getName()
  const emailAddress = "marketing@theperch.in";
  const subject = "Bookingmail Script not executed"
  const message = "Please check script and run again"
  if(sheetName != "name of sheet to be excluded"){

    bookingmail(sheet)
    }}
  }


 function bookingmail(sheet) {

 var startRow = 2;  // First row of data to process
var numRows = sheet.getLastRow()
var lastCol = sheet.getLastColumn() //  Number of rows and coloumns to 
process 


var EMAIL_SENT = "EMAIL_SENT"; // This constant is written in column V for 
rows for which an email
var dataRange = sheet.getRange(startRow, 1, numRows, lastCol) // Fetch 
values for each row in the Range
var message = sheet.getRange("W2").getValue(); // This is for cell W2
var data = dataRange.getValues();

// Loop created to fulfill the if conditions and then execute mailsend app
for (var i = 0; i <= numRows - 1; i++) {
var row = data[i];
var emailAddress = row[8];  // Ninth column
 var emailSent = row[21]; // Twenty second column
var daysleft = row[20]; // Twenty first coloumn
var subject = "Your upcoming stay; Helpful Information "; // E-Mail Subject
var file = DriveApp.getFileById('0B3R47ecEHS2-WUFRTmFaT2piWDg');

//I have added a condition to make sure that it will only send if the 
customer has not already received an email
if (emailSent != EMAIL_SENT && emailAddress != '' && (daysleft === 0 || 
daysleft === 1)) { // Prevents sending sending same mail again to a person, 
also 
skips blank cells
                                                                     //if 
daysleft =1 or 0 then send mail .
MailApp.sendEmail(emailAddress, subject, message, {
attachments: [file.getAs(MimeType.PDF), blob],
name: 'Welcome mail- Perch Arbor Golf Course.pdf'});
 sheet.getRange(startRow + i, 22).setValue(EMAIL_SENT);
// Make sure the cell is updated right away in case the script is 
interrupted
}
}
   SpreadsheetApp.flush();//you only need to do this when all the rows have 
been processed
}