According to the source, how do ignorance (Avidya) and the perception of duality contribute to the fear of death, and what is the prescribed solution?

Chapter 37 explains that ignorance, or Avidya, is the root cause of all suffering as it establishes the perception of manifoldness and duality. This obsession with duality is precisely where fear enters one's life, leading to the constant sufferings of birth and death. The text states that anyone holding even a slight view of difference will be followed by destruction and creation. The solution prescribed is to counter this ignorance by acquiring knowledge, or Vidya, through the scriptures and the Guru. When ignorance is removed, the knowledge of manifoldness vanishes, birth and death cease, and one can serve the non-distinguished state where there is not even a trace of fear.