type mismatch

Expression: `[]`(lista, 0)
[1] lista: LinkedList
[2] 0: int literal(0)
Expected one of (first mismatch at [position]):
[0] func `[]`(self: LinkedList; index: var int): int
[0] proc `[]`(s: string; i: BackwardsIndex): char
[0] proc `[]`(s: var string; i: BackwardsIndex): var char
[0] proc `[]`[I: Ordinal; T](a: T; i: I): T
[0] proc `[]`[Idx, T; U, V: Ordinal](a: array[Idx, T]; x: HSlice[U, V]): seq[T]
[0] proc `[]`[Idx, T](a: array[Idx, T]; i: BackwardsIndex): T
[0] proc `[]`[Idx, T](a: var array[Idx, T]; i: BackwardsIndex): var T
[0] proc `[]`[T, U: Ordinal](s: string; x: HSlice[T, U]): string
[0] proc `[]`[T; U, V: Ordinal](s: openArray[T]; x: HSlice[U, V]): seq[T]
[0] proc `[]`[T](s: openArray[T]; i: BackwardsIndex): T
[0] proc `[]`[T](s: var openArray[T]; i: BackwardsIndex): var T
[0] template `[]`(a: WideCStringObj; idx: int): Utf16Char
[0] template `[]`(s: string; i: int): char