Spati MediaLibrary not saving images

Hello,

i'm quite new to laravel and have an issue where i'm kinda stuck.

I'm using the MediaLibrary package from spatie and i'm trying to store an image that has beeen uploaded.

Everything works fine, expect that the image is not stored and no recored is placed in the database.

Maybe someone can help me out.

Thanks!

MediaController

<?php

namespace App\Http\Controllers;


use App\Media;
use Illuminate\Http\Request;

class MediaController extends Controller
{

    // Hintergrund Polygon hinzufügen
    public function addBackgroundImage(Request $request)
    {
     
     // Media::create()
     //         ->addMediaFromRequest('background')
     //         ->toMediaCollection();


        $media = new Media;

        $media->addMediaFromRequest('background')
              ->toMediaCollection('backgrounds');

        return redirect('/settings')->with('success', 'Hintergrund Bild hinzugefügt');
    }

}

Model

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;
use Spatie\MediaLibrary\HasMedia\HasMediaTrait;
use Spatie\MediaLibrary\HasMedia\HasMedia;

class Media extends Model implements HasMedia
{
        use HasMediaTrait;

}

Thanks!