Chocolate cake with chestnut filling

Strange New in The World ― I made this cake because one of my sons very often eats chestnut cream. So I came up with the idea of a chestnut filling, and I don't regret it, because this chestnut filling cake came out delicious. The chestnut cream in a jar is very thick, that is harder, and it must be mixed with whipped cream so that it is easier to spread on the cake layer. I could have made a separate chocolate cream or ness coffee cream to soften the chestnut cream, but I thought it's better to put whipped cream so as [...].