@ohffs Hey. Storm is great at looking codebases, but you have to be patient. First and foremost is that anything marked as Red or broken may not be so to the installed PHP interpreter. You need to set your active/excluded project directories. You need to set the exact PHP setting you will use in the Settings/Language/PHP settings. Need to see how you setting things up and the code examples.
For example to bootstrap Laravel and use Vendor autoloader, I do this...
<?php
use App\MyGlobals;
use App\lib\myutils\apputils\GDate;
use App\lib\myutils\utils\Pack;
use App\lib\myutils\apputils\mongo\MongoConnection;
use App\lib\myutils\apputils\mongo\MongoDocument;
use App\lib\nba\NBATeam;
require dirname(__DIR__) . '/vendor/autoload.php';
require dirname(__DIR__) . '/bootstrap/app.php';