Why won't my Eevee evolve with Leaf Stone in Pokemon Shield?

Help. I would like a Leafeon for my play-through of Pokemon shield but my Eevee won't evolve when I try and use a leaf stone on it.
Everyone I see is saying that you evolve Eevee into Leafeon by using a leaf stone but it won't work.

Any ideas why this might be happening and if you know other ways of getting the Eeveelution then please say so.

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1 Answer

The Gigantamax Eevee you receive from owning Pokémon Let's Go Eevee can't evolve at all. The same holds true for the Gigantamax Pikachu from owning Let's Go Pikachu.

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