I think this is the error but not 100% sure.
2018/10/10 06:27:27 ERROR : Videos/TV/Outlander/Season 03/Outlander S03E12 - The Bakra.mkv: ReadFileHandle.Read error: low level retry 9/10: open file failed: googleapi: got HTTP response code 403 with body:
When something doesn’t play in PLEX and Kodi, I log into my VM and cd to the gdrive path and try to play it directly.
If that fails I go to the gdrive webpage and try it that way. That is where I saw the download exceeded error for this file.