If there's nothing in empty space, then how does it get warped by gravity?

[Neo-Scholastic]

Space isn't a container. I think of it more as a kind of knowledge about embodied extension.

Hi Deepak, what brings you here?

That was uncalled for. ;-) The OP seemed to imply a Newtonian conception of space as a uniformly divided plenum, i.e. a container. I don't find it particularly mystical to consider spacial extension in terms of quantitative information between discrete physical entities that may or may not reflect what people intuitively believe as distance between objects.