fix: add fallback value for setting variables

resources/views/livewire/frontend/mailbox.blade.php

@@ -7,7 +7,11 @@
                 <flux:heading class="mb-3" size="xl" level="1">Inbox</flux:heading>
                 <div class="mb-3"></div>
                 @foreach(array_reverse($messages) as $i => $message)
-                    @if($i % 5 == 0 && json_decode(config('app.settings.ads_settings'))->five)
+                    @php
+                        $adsSettings = json_decode(config('app.settings.ads_settings') ?: '{}');
+                        $showAdFive = $adsSettings->five ?? false;
+                    @endphp
+                    @if($i % 5 === 0 && $showAdFive)
 
                     @endif
                     <div class="inbox-list cursor-pointer" x-on:click="show = true; id = {{ $message['id'] }};" data-id="{{ $message['id'] }}">