Anybody explain me why first function working why second not working

Software Development
#1

getcount = (line) => {

let vowels = [“a”, “e”, “i”, “o”, “u”];

console.log(

line.split("").filter((letter) => {

  return vowels.includes(letter) ? true : false;

})

);

};

getcount(“sixer”);

anotherMethod = (word) => {

let vowels = [“a”, “e”, “i”, “o”, “u”];

console.log(vowels.includes(word.split("")));

};

anotherMethod(“hello”);