cannot find module file

I am doing my Udemy course and I am stack now ;( If anyone can help me it would be great! So the Error said "Error: Cannot find module '/Users/yui/Desktop/todolist-v1/date.js' Require stack: - /Users/yui/Desktop/todolist-v1/app.js"

but I am not sure why they cannot find module. Thanks in advance.

app.js file

//jshint esversion:6

const express = require("express");
const bodyParser = require("body-parser");
const date = require(__dirname + "/date.js");

const app = express();

let items = ["Buy Food","Cook Food","Eat Food"];
let workItems = [];

app.set("view engine", "ejs");

app.use(bodyParser.urlencoded({extended: true}));
app.use(express.static("public"));

app.get("/", function(req, res){

 let day = date();

 res.render("list", {ListTitle: day, NewListItems: items});

});

app.post("/", function(req, res){

 let item = req.body.newItem;

 if(req.body.list === "Work"){
   workItems.push(item);
   res.redirect("/work");
 }else{
   items.push(item);
   res.redirect("/")
 }
});

app.get("/about", function(req, res){
   res.render("about")
});

app.get("/work", function(req, res){
   res.render("list", {ListTitle: "Work List", NewListItems: workItems});
});

app.post("/work", function(req, res){
   let item = req.body.newItem;
   workItems.push(item);
   res.redirect("/work");
})


app.listen(3000, function(){
 console.log("Server is running on port 3000");
});

date.js file

//jshint esversion:6

module.exports = getDate;

function getDate(){

 let today = new Date();

 let currentDay = today.getDay();

 let day = "";
 　
 let options = {
    weekday: "long",
    day: "numeric",
    month: "long"
 };

 let day = today.toLocaleDateString("en-US", options);

};