>>5222158>>5222100Hmm, apparently the wiki says that Void Shields use "Warp-Based" technology (not sure on the source for this).
But the way most BL writers seem to treat it it acts more like technology, without blanks disrupting it. It's likely the answer to is same question why Blanks, or even the Black Ships of the Sisters of Silence loaded with Blanks and themselves can still open up warp and travel or follow the Astronomican. Because while Gellar-Field is technically warp tech, it creates a bubble of reality around the ship instead.
Also they aren't the only type of shield tech the Imperium uses. There's Refractor Fields, Repulsor Fields, Atomantic Shields, Ion Shields, Mag-Inverters, Construct Shields. Cawl seems to favor Conversion shields personally.
However, we know for a fact there are in deed non-warp based shields such as the Quantum Shielding deployed by the necrons which use only the laws of physics.
From what I can tell the truly psychic based shields are this
https://wh40k.lexicanum.com/wiki/Cults_of_the_Thousand_Sons>The Raptorae are telekines, trained in using their own telekinetic power as a means of both offense and defense>Defensively, they generate 'kine shields', barriers of invisible physical force that blocked attacks 