Einstein's derivation of a doubling of Newtonian deflection.

How relativity derives the amount of the deflection:
1. It accepts the mass-velocity relationship, which prohibits anything
with any mass from reaching light speed, meaning the photon can have no
mass.
2. Therefore, according to relativity, gravity cannot affect photons.
Relativity either has to abandon the mass-velocity relationship or
abandon the claim that photons are affected by gravity. Until then, it
remains self-contradictory nonsense, as always.