Why did Pilate's wife tell him to have nothing to do with Jesus?

Answer: She suffered in a dream

Pilate's wife sent word: "Have nothing to do with that innocent man, for I have suffered terribly in a dream today because of Him."

“While Pilate was sitting on the judgment seat, his wife sent him this message: “Have nothing to do with that innocent man, for I have suffered terribly in a dream today because of Him.””— Matthew 27:19 (BSB)