ProxyPanel/app/Http/Controllers/MessageController.php

<?php

namespace App\Http\Controllers;

use App\Models\NotificationLog;
use Illuminate\Http\Request;
use Illuminate\Mail\Markdown;

class MessageController extends Controller
{
    public function index(string $type, string $msgId)
    {
        if ($type === 'markdown') {
            $log = NotificationLog::whereMsgId($msgId)->latest()->firstOrFail();
            $title = $log->title;
            $content = Markdown::parse($log->content)->toHtml();
        }

        return view('components.message', compact('title', 'content'));
    }
}