Switching Environments in PHP - php

Question

I am having trouble understanding the dynamic structure of PHP. I don't know PHP very well but I do know how to code JavaScript, HTML, and CSS.
A website that I help manage has an environment meant for Macs. I am not a Mac user in the least and would know how to get this local instance of the website up and running.
Tried using Vagrant, got it and not many tutorials tell me how it could be done, so then I used PhpStorm to run the server then I keep getting this error on line 21 of this file.
I am trying to find where I point the system directory and find the autoload.php file which I do have. But being originally created on a Mac makes it very difficult.
Here is the error:
Warning: require(D:\Vagrant
project\compasshb.com\public/boostrap/autoload.php): failed to open stream:
No such file or directory in D:\Vagrant
project\compasshb.com\public\index.php on line 22
Fatal error: require(): Failed opening required 'D:\Vagrant
project\compasshb.com\public/boostrap/autoload.php'
(include_path='.;C:\php\pear') in D:\Vagrant
project\compasshb.com\public\index.php on line 22
Makes no sense to me.
Here is line 22 in index.php:
<?php
/**
* Laravel - A PHP Framework For Web Artisans.
*
* #author Taylor Otwell <taylorotwell#gmail.com>
*/
/*
|--------------------------------------------------------------------------
| Register The Auto Loader
|--------------------------------------------------------------------------
|
| Composer provides a convenient, automatically generated class loader for
| our application. We just need to utilize it! We'll simply require it
| into the script here so that we don't have to worry about manual
| loading any of our classes later on. It feels nice to relax.
|
*/
require __DIR__.'/boostrap/autoload.php';
/*
|--------------------------------------------------------------------------
| Turn On The Lights
|--------------------------------------------------------------------------
|
| We need to illuminate PHP development, so let us turn on the lights.
| This bootstraps the framework and gets it ready for use, then it
| will load up this application so that we can run it and send
| the responses back to the browser and delight our users.
|
*/
$app = require_once __DIR__.'/../bootstrap/app.php';
/*
|--------------------------------------------------------------------------
| Run The Application
|--------------------------------------------------------------------------
|
| Once we have the application, we can handle the incoming request
| through the kernel, and send the associated response back to
| the client's browser allowing them to enjoy the creative
| and wonderful application we have prepared for them.
|
*/
$kernel = $app->make(Illuminate\Contracts\Http\Kernel::class);
$response = $kernel->handle(
$request = Illuminate\Http\Request::capture()
);
$response->send();
$kernel->terminate($request, $response);