Propagation of light

Currently the accepted theory is the standard model, all the data from experiments supports that.

According to that model (and QFT), light consists of a herd of photons, and the photons are excitation of the EM (photon) field.

According to the model, these fields exist throughout space everywhere. This is the only way light can propagate through everywhere in the observable universe.

These fields are all part of the fabric of the universe, and there is no way we could create a part of spacetime where there is no EM field present.

But let's disregard that, and say we could (we can't) create a part of spacetime where there is no EM field present. Since photons themselves are excitation of the photon field, there could be no photons present at all, and no electrons (and atoms) to emit them, so light could not even exist in that part of spacetime.