The problems of general relativity arise when you look at the Universe at very small or at very large scales. So, what's wrong with general relativity?
In fact, first, general relativity is made based on thought experiment, not the real experiment. Secondly, Einstein's thought experiments are incomprehensive, illogical, and misleading. Third, Einstein never proved general relativity. Fourth, Einstein ignored the refraction of light and the existing of celestial sphere, that's why Einstein proposed the test for his hypothesis deflection of light by the Sun isn't scientific and deeply wrong. Einstein's proving method need to be examined more thoroughly and need to be taken seriously.
Every hypothesis should first be able to explain the experimental results in order to be taken seriously. But, what if the proving method of a hypothesis is not scientific but not to be taken seriously, althought the first experimental results was error? That is occur in the case of Einstein’s provng method for ‘ The Deflection of Light by the Sun ‘
“Einstein proposed therefore, that photographs be taken of the stars immediately bordering the darkened face of the sun during an eclipse and compared with photographs of those same stars made at another time.” (LincolnBarnett, The Universe and Dr. Einstein, London, June 1949, Preface by Albert Einstein Himself, page 78).
Actually error in the famous eclipse experiment of 1919, but F.W.Dyson writes: “It seems clear that the effect found must be attributed to the Sun’s gravitational field and not, for example, to the refraction by coronal matter” (F.W.Dyson, F.R.S, A Determination of the Deflection of Light by the Sun’s Gravitational Field, from Observations made at the Total Eclipse of May 29, 1919).