"Back to the Galilean Transformation and Newtonian Physics" - Moshe Eisenman c.2017

He shows that the Maxwell equations are invariant under the Galilean
transformations making the LT invalid.
free pdf =
https://www.globalscientificjournal.com/researchpaper/Back-to-Galilean-Transformation-and-Newtonian-Physics-Refuting-the-Theory-of-Relativity.pdf
"Abstract
This paper refutes the theory of relativity. Previous attempts by others
were based on pointing at contradictions between corollaries of the
theory of relativity and reality, often called paradoxes. The main point
of this article is to indicate and correct the error that led scientists
at the turn of the twentieth century to formulate the faulty theory of
relativity."