Comment on "Rogue waves on the double-periodic background in the focusing nonlinear Schrödinger equation"

Some years ago, Chen, Pelinovsky, and White claimed existence of certain solutions of the nonlinear Schrödinger equation for modelling rogue waves [arXiv: 1909.08165v1 (2019)]. It is the aim of this Comment to outline that this claim is faulty. – The solutions presented do not satisfy the nonlinear Schrödinger equation.