How to create an Entity reference with taxonomy term selection?
Here, start with creating a new view and be sure to select taxonomy terms.

In short:
- Add new view
- Select: Show Taxonomy Terms
-> Save &amp; Continue
- Fields: Entity Reference View Widget Checkbox: Taxonomy term
- And ofcourse Taxonomy Term

Go back to your contenttype page and be sure to select the right view with your entity referece field.

Cheers,