我有以下 Google Apps 脚本，它从上传表单中获取文件并将其自动存储在我的 Google 云端硬盘中（完整代码在下面的代码片段中）。问题出在这一部分：
var file = folder.createFile(blob);
//Get root folder and pull all existing folders, plus setup variables pulled from form
var dropbox = form.Country;
var filename = form.reportType+".xls";
var rootfolder = DriveApp.getFolderById("0Byvtwn42HsoxfnVoSjB2NWprYnRiQ2VWUDZEendNOWwwM1FOZk1EVnJOU3BxQXhwU0pDSE0");
//Note root folder is Live Uploads Folder in Flatworld App folder structure
var folder, folders = rootfolder.getFoldersByName(dropbox);
//Check if folder exists and if not create
if (folders.hasNext()) {
folder = folders.next();
} else {
folder = rootfolder.createFolder(dropbox);
}
//Check if file already exists and …