Replace text in multiple Google Docs of a specific folder

问题

I've tried variations of code to get this to work, but nothing is working. Can anyone help?

    function pleaseWork() {
  var files = DriveApp.getFolderById("IDofFolder").getFilesByType(MimeType.GOOGLE_DOCS);
  while (files.hasNext()) {
    var file = files.next();
    Logger.log(file.getName());
    var doc = DocumentApp.openById(file.getId());
    doc.replaceText("User Services", "Customer Success");
  }
  Logger.log("Done")
}

来源：https://stackoverflow.com/questions/65334592/replace-text-in-multiple-google-docs-of-a-specific-folder