I just found a blunder in a chess lesson

Hello there i found a blunder (according to stockfish 12) in this chess lesson 3/4
https://www.chess.com/lessons/queen-fork
the lesson says Qd4 is the strongest move but i couldnt believe that because Qa8 attacking a hanging pawn and threatening the same fork seemed to be much stronger which is also the strongest move according to stockfish 12

Hmm, Qd4 threatens both rooks. Qa8+ is not even a legal move.

play it a bit further then you know what i mean

In the initial position, the queen was on e3.

It can't possibly move to a8 in one move.

e3 is a dark square. If the queen goes towards that corner, it gets to a7.

It can't get to a8, at least not legally.

Therefore, even with bad play by black, it couldn't get to the rook on h8 on its next move.

 have you even read my post or the comment i made after your first post?

when have i ever stated that i am talking about the first part out of 4?
I was talking about the 3/4 i even added it after i seen my mistake and also suggested that you should play the lesson a bit further!

I even added the position in my second post i was talking about which is a part of the lesson!!

It gives 3 Qa8 as an alternate solution.

It hardly seems like a blunder.

Qd4 does nothing. Qd4 attacks both rooks.

But now that I 'm finally looking at the 3rd move with the engine, it is clear that Qd4 is not the best or even one of the best moves.

I guess you should send a note to the developers that they need to double-check the moves with a computer.

read the whole post and also the comment afterwards!!!!!!

so after one year the lesson is still considering a blunder (stockfish 12) as the best move