The failure of the unified field theory means general relativity fails.

The failure of the unified field theory means general relativity fails.
A. General relativity explains Mercury's anomalous perihelion advance
and the bending of light by treating gravity as electromagnetic using
electromagnetic formulas and the assumption of the speed of light for
the speed of gravity.
B. The unified field theory failed to unify electromagnetism and
gravity. ["Then, in the early part of the 20th century, Albert Einstein
developed general relativity, a field theory of gravitation. Later,
Einstein and others attempted to construct a unified field theory in
which electromagnetism and gravity would emerge as different aspects of
a single fundamental field. They failed, and to this day gravity remains
beyond attempts at a unified field theory."- Britannica]
C. Therefore, general relativity fails to explain Mercury's perihelion
advance and the bending of light.