AttributeError：'NoneType'对象没有属性'filename'。 Flask-Restplus似乎无法将上传的文件识别为Filestorage对象

I am trying to upload 2 files(an audio and image file) along with some data. I am very new to using Flask, but after reviewing other people with Filestorage issues, I am not sure what I am doing wrong.I am trying to upload 2 files(an audio and imag