Jai Shri Krishna - S01E148 - Krishna shocks Kans in his disguise

Watch Jai Shri Krishna Season 1 Episode 148. The show was broadcast on July 27, 2017 on the Colors Bangla channel. Kansa is in a dream. Kansa imagines that Aghashura has entered his castle and has spoken to him with Krishna’s voice. Aghashura says that he killed Krishna. Kansa then goes through a nightmare during which he discovers Krishna is alive, and is threatening to take him down. What is the reason Kansa could Kansa experience such a nightmare?