在javascript中使用文件选择器从Gdrive中选择文件时无法获取文件名

I am trying to pick a file from Gdrive using filepicker.js and below method in javascript,but getting file.title is undefined. How to get the selected file name?. I need to read the data from the selected file. Please help me. var picker = new FilePicker({I am trying to pick a file from Gdrive using fi