'Failed to open stream: Permission denied' error - Laravel 5.4 - php

Question

I run my webserver on windows (XAMPP Control Panel v3.2.2). I am creating files and folders like this:
use File;
...
$Path = app_path()
. '/Projects/'
. strtolower($Project->name)
. '/Schema/';
if (File::exists($Path)) {
$result = 1;
} else {
$result = File::makeDirectory($unitPath , '775', true);
$content = "the content is basically a whole controller";
$file = $Path . strtolower($Unit->name) . '.php';
$bytes_written = File::put($file, $content);
if ($bytes_written === false) {
return false;
}
}
The file which I create is a PHP controller.
The files and folders are created. However by using git bash I noticed that the permission is not set to 775 even though I have specified it in makeDirectory, same for the files.
If I try to execute an action from the created file (which is a controller), then I get:
ErrorException in
C:\xampp\htdocs\selenium\vendor\composer\ClassLoader.php line 440:
include(C:\xampp\htdocs\selenium): failed to open stream: Permission
denied
How can I solve this, other than running my webserver on linux instead of windows?
NOTE: Everything works fine on my computer at home, where I also run the webserver on windows. The only difference is that I am using Windows 10 64bit at home and Windows 7 64bit here at work.
UPDATE:
The ErrorException include(C:\xampp\htdocs\selenium): failed to open stream: Permission denied dissapeared after executing composer update. But the question how I can create a file/folders with specific permissions persists.
UPDATE 2:
After creating a new file the ErrorException appears again...