Please help me figure out the meaning of the phrase "try filling in" in the following text from the description of the game Genshin Impact:
You can use earth elemental combat skills to create a “starfall” and put it in place of a missing stone statue to unlock a treasure chest. You can try filling in or destroying other similarly incongruous features, such as collectibles, rock piles or monsters, to uncover bonuses.
I am not sure which of the lexical meanings given here fits in the given context.