Is is true that we cann't image a world without space?

Ultimately whatever the plane of existence you are referring there must be a space of spaces that is not contained by anything else. As for time, well, time is just more space...going further, space is not void waiting for being fulfilled but somethingness through which other things and their information flows...even perhaps, just the base information set about other information subsets and its order.

In physics one significant view of space is that it is a relationship between 'objects'. But since 'a person doing imagining' is axiomatically 'a subject' contemplating 'objects', Kant's reference to 'imagining' by a person is tautologically correct with respect to the concept of space as an a priori. It is only when we take a metaphysical (holistic) view of existence as a seamless continuity between what we call 'subjects' and 'objects' that 'space' can be transcended.

Apologies if anybody has already pointed this out above.