Blog Preview results in missing bundle property on entity of type node

Good afternoon,
An attempt to preview a blog post results in the below error for one of my users. Strangely, I cannot recreate the error with a different user. Unfortunately, I don't have a strong knowledge of Drupal innards.

I just stared using taxonomy yesterday in most of my content types. Is it possible that I have a situation similar to the one found here? Any other information is greatly appreciated!