This morning, I tried using Google APIs File Insert where I provided MIME TYPE as application/vnd.google-apps.document.
I am getting the following response from Google API
HttpError: <HttpError 400 when requesting https://www.googleapis.com/upload/drive/v2/files?uploadType=resumable&alt=json returned "Invalid mime type provided">
I replaced MIME TYPE application/vnd.google-apps.document with application/msword and the API started working. Has anything changed with Google API?