Bug pawn disapeared and "white" pawn moved incorectly

lichess.org/study/8GCXh8Dy/zUQHl2i4#:~:text=The%20en%20passant%20rule%20is,only%20moved%20one%20square%20forward.

Oh damn... I'm really sorry about that, it's the first time I ever hear of that rule

@AlexPresso There are even chess puzzles here on LiChess where you can practice capturing pawns en passant.

Here's one: lichess.org/training/04Mtz and here's another: lichess.org/training/0yXmS

You might find these useful.