When someone claims to have encounters with supernatural beings and receive revelations from God, it seems to me that one of the possibilities that must be considered is that the claims are the product of an over active imagination. The person making the claims might be perfectly sincere, but he he might be delusional or he might be a pathological liar.
In the 19th century, Joseph Smith managed to convince many literate people that he had encountered a supernatural being and that he had received revelations from God. Some of his followers made similar claims. Most non-Mormons seem to think that Smith was a huckster or a lunatic. In the 1st century, many illiterate peasants became convinced that a supernatural being had made appearance to various people and that God had given revelations to some of the people who had witnessed those appearances. Nevertheless, I have never seen any serious discussion of the possibility that the resurrection was an invention of someone's imagination.