Fix `firstMedia()` call to `firstMedia` since now it's a proper relationship and does not need to be called as a method.

app/Status.php

@@ -25,7 +25,7 @@ class Status extends Model
 
     public function thumb()
     {
-      return url(Storage::url($this->firstMedia()->thumbnail_path));
+      return url(Storage::url($this->firstMedia->thumbnail_path));
     }
 
     public function url()

app/Transformer/ActivityPub/ProfileOutbox.php

@@ -56,8 +56,8 @@ class ProfileOutbox extends Fractal\TransformerAbstract
               // TODO: support more than 1 attachment
               [
                 'type' => 'Document',
-                'mediaType' => $i->firstMedia()->mime,
-                'url' => $i->firstMedia()->url(),
+                'mediaType' => $i->firstMedia->mime,
+                'url' => $i->firstMedia->url(),
                 'name' => null
               ]
             ],

resources/views/admin/statuses/home.blade.php

@@ -30,7 +30,7 @@
         @if(!$status->media_path)
         <td class="font-weight-bold">0</td>
         @else
-        <td><div class="human-size" data-bytes="{{$status->firstMedia()->size}}">{{$status->firstMedia()->size}}</div></td>
+        <td><div class="human-size" data-bytes="{{$status->firstMedia->size}}">{{$status->firstMedia->size}}</div></td>
         @endif
         <td class="font-weight-bold">{{$status->created_at->diffForHumans(null, true, true, true)}}</td>
       </tr>