Using vinkla/hashids - does not decode id

i have a problem with vinkla / hashids

Value id = o2yb4

public function reserva(Request $request, $id){

  $decode = Hashids::decode($id);

dd($decode);

Result dd:

it does not decode the o2yb4 value in any way.

I tried re-encrypting the o2yb4 value, and then decrypting but it didn't throw me any value.

help pls

via Chebli Mohamed