dang PHP require. PHP sees the file, why is artisan not finding it?

artisan.php

#!/usr/bin/env php
<?php

/*
|--------------------------------------------------------------------------
| Register The Auto Loader
|--------------------------------------------------------------------------
|
| Composer provides a convenient, automatically generated class loader
| for our application. We just need to utilize it! We'll require it
| into the script here so that we do not have to worry about the
| loading of any our classes "manually". Feels great to relax.
|
*/

require __DIR__.'/bootstrap/autoload.php';

$app = require_once __DIR__.'/bootstrap/app.php';

/*

bootstrap_autoload.php

<?php

define('LARAVEL_START', microtime(true));

/*
|--------------------------------------------------------------------------
| Register The Composer Auto Loader
|--------------------------------------------------------------------------
|
| Composer provides a convenient, automatically generated class loader
| for our application. We just need to utilize it! We'll require it
| into the script here so that we do not have to worry about the
| loading of any our classes "manually". Feels great to relax.
|
*/

require __DIR__.'/vendor/autoload.php';

/*
|--------------------------------------------------------------------------
| Include The Compiled Class File
|--------------------------------------------------------------------------
|
| To dramatically increase your application's performance, you may use a
| compiled class file which contains all of the classes commonly used
| by a request. The Artisan "optimize" is used to create this file.
|
*/

$compiledPath = __DIR__.'/cache/compiled.php';

if (file_exists($compiledPath)) {
    require $compiledPath;
}

output.txt

PHP Warning:  require(/media/psf/Home/apps/customer/bootstrap/vendor/autoload.php): failed to open stream: No such file or directory in /media/psf/Home/apps/customer/bootstrap/autoload.php on line 17
PHP Stack trace:
PHP   1. {main}() /media/psf/Home/apps/customer/artisan:0
PHP   2. require() /media/psf/Home/apps/customer/artisan:16

php -a.txt

$a = '/media/psf/Home/apps/customer/bootstrap/autoload.php';
if (is_file($a)) {echo 'ya';}
ya