No content showing up when trying to export a single price rule

I have set up some price rules using the commerce_price_rule module. Unfortunately I can not export them.
When I select 'Price Rule' as the Content type and Price Rule (commerce_price_rule) as the Name I can not choose a Content Entity.
Whatever I type into the field available for the name, it just show a throbber, never coming up with an entity (see screenshot)