I'm facing this error and I don't really understand why. Other ask don't contains usefully information so I try to ask again providing more details Content range missing header Response detail
As specified in the documentation:
The simple REST client expects the API to include a
Content-Rangeheader in the response toGET_LISTcalls. The value must be the total number of resources in the collection. This allows admin-on-rest to know how many pages of resources there are in total, and build the pagination controls.
Your header does not have the requested format:
Content-Range: posts 0-24/319
