Php uses other class than specified

I am experiencing a very weird issue.

I have two classes, one is in App\Projects\github\Units\github_login and the other is App\Projects\github\Schema\github_login

The Schema file is just a scheme which shows the skeletal structure of the file App\Projects\github\Units\github_login.

In fact, it should never ever get loaded and executed, it is just for humans.

However, PHP always executes this file instead of App\Projects\github\Units\github_login

namespace App\Http\Controllers;

use App\Models\Selenium;
use App\Models\Project;
use App\Projects\github\Units\github_login;

class PlayController extends BasePlayController
{
    private $github_login;

    function __construct()
    {
        parent::__construct();
        $this->github_login = new github_login();
    }

    /**
    * Play a testcase X times.
    *
    * @param string $Project
    * @param string $Unit
    * @param string $Scenario
    * @param string $Testcase
    * @param int $Times
    * @param int $Delay
    * @return /Illuminate/View/View
    */
    public function PlayCase($Project, $Unit, $Scenario, $Testcase, $Times=1, $Delay=3)
    {
        $SeleniumObj = $this->Selenium;

        $Unit =  $Project .'_'. $Unit;

        switch ($Project) {
            case 'github':
                switch ($Unit) {
                    case 'github_login':
                        switch ($Scenario) {
                            case 'standard':
                                 $this->callCase(array($this->github_login, 'standard'), $Testcase, $Times, $Delay);
                                break;
                            default:
                                $SeleniumObj->logMessage[$SeleniumObj->index]['TestcaseTitle'] = $Scenario;
                                $SeleniumObj->setMessage(2,"Das Szenario '<strong>". $Scenario ."</strong>' existiert nicht!", '');
                        }
                        break;
                }
                break;
            default:
                $SeleniumObj->setTitle('Projekt existiert nicht.');
                $SeleniumObj->setMessage(2,'Das Projekt <strong>'. $Project .'</strong> existiert nicht. (Fix: einfach neuen Testfall anlegen)', '');
        }

        return view('show.report')->with('driver',        $SeleniumObj->driver)
                                  ->with('ScenarioName',  $Scenario)
                                  ->with('logMessage',    $SeleniumObj->logMessage)
                                  ->with('execScriptRet', $SeleniumObj->execScriptRet)
                                  ->with('screenshot',    $SeleniumObj->screenshot)
                                  ->with('PlayAll',       false);
    }

As you can see in the screenshot, it even loads the right one, but how on earth does it execute the one in folder Schema?

I am making selenium tests btw and use the github login page for start.

UPDATE:

BasePlayController - callCase:

namespace App\Http\Controllers;

use App\Models\Selenium;

class BasePlayController
{
    public $Selenium;

    function __construct()
    {
        $this->Selenium = new Selenium();
    }

    public function callCase($thisFunction, $Testcase, $Times=1, $Delay=1)
    {
        $SeleniumObj = $this->Selenium;

        if (is_numeric($Times)) {
            for($i = 1; $i <= $Times; $i++) {

                $thisFunction($SeleniumObj, $Testcase);
                sleep($Delay);
            }
        } else {
            $SeleniumObj->logMessage[$SeleniumObj->index]['TestcaseTitle'] = 'Falscher Parameter für Times.';
            $SeleniumObj->setErrorMessage("Times muss eine Zahl sein! (Gegeben: '<strong>". $Times ."</strong>')", '');
        }
    }

 ...

UPDATE 2

Autloader Entry in vendor\composer\autoload_classmap.php

'App\\Projects\\github\\Units\\github_login' => $baseDir . '/app/Projects/github/Schema/github_login.php',

I tried to change it to

'App\\Projects\\github\\Units\\github_login' => $baseDir . '/app/Projects/github/Units/github_login.php',

but it made no difference.