NodeJS: Error: Cannot find module '/models/filename' after having renamed it - node.js

Question

I am still relatively new to NodeJS. Now I encounter this problem: I had a file called "./models/route" I renamed it by changing the filename in VS Code to: "./models/routes". I then changed that name in all of the scripts. I checked, doubledchecked, triplechecked and quadruplechecked that it has been changed everywhere and it has.
Now I get this error in the console:
internal/modules/cjs/loader.js:638
throw err;
^
Error: Cannot find module './models/routes'
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
at Function.Module._load (internal/modules/cjs/loader.js:562:25)
at Module.require (internal/modules/cjs/loader.js:690:17)
at require (internal/modules/cjs/helpers.js:25:18)
at Object.<anonymous> (C:\node-projects\wandelverhalen\controllers\routesController.js:4:16)
at Module._compile (internal/modules/cjs/loader.js:776:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:787:10)
at Module.load (internal/modules/cjs/loader.js:653:32)
at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
at Function.Module._load (internal/modules/cjs/loader.js:585:3)
at Module.require (internal/modules/cjs/loader.js:690:17)
at require (internal/modules/cjs/helpers.js:25:18)
at Object.<anonymous> (C:\node-projects\wandelverhalen\index.js:11:26)
at Module._compile (internal/modules/cjs/loader.js:776:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:787:10)
at Module.load (internal/modules/cjs/loader.js:653:32)
[nodemon] app crashed - waiting for file changes before starting..
The error apparently is encountered in internal/modules/cjs/loader.js:638. So it does not point me to a script that I made or can change.
I really am at a loss...
Edit:
As Mosifa points out in his comment the error points to ./wandelverhalen/controllers/routesController.js and ./wandelverhalen/index.js.
Here are the scripts. I still can't find the problem.
index.js:
"use strict";
const express = require("express");
const mongoose = require("mongoose");
const app = express();
const Routes = require("./models/routes");
const homeController = require("./controllers/homeController");
// const errorController = require("./controllers/errorController");
const routesController = require("./controllers/routesController");
mongoose.connect("mongodb://localhost:27017/db_wandelen", {
useNewUrlParser: true
});
const db = mongoose.connection;
db.once("open", () => {
console.log("Connected to MongoDB");
});
app
.set("port", process.env.PORT || 3000)
.set("view engine", "ejs")
.use(
express.urlencoded({
extended: false
})
)
.use(express.json())
.use(express.static("static"))
.use(layouts)
.use((req, res, next) => {
console.log(`Request made to ${req.url}`);
next();
})
// .use(errorController.pageNotFoundError)
// .use(errorController.internalServerError)
.get("/", homeController.start)
.get("/kempen", homeController.kempen)
.get("/rivieren", homeController.rivieren)
.get("/oost_belgie", homeController.oost_belgie)
.listen(app.get("port"), () => {
console.log(`Server running at port ${app.get("port")}`);
});
routesController.js:
"use strict";
const mongoose = require("mongoose");
const Routes = require("./models/routes");
exports.getAllRoutes = (req, res, next) => {
Routes.find({}, (error, routes) => {
if (error) next(error);
req.data = routes;
next();
});
};