/home2/mshostin/farms.ms-hostingladz.com/app/Http/Middleware/AdminMiddleware.php
<?php

namespace App\Http\Middleware;

use Closure;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;

class AdminMiddleware
{
    /**
     * Handle an incoming request.
     */
    public function handle(Request $request, Closure $next)
    {
        /** @var \App\Models\User|null $user */
        $user = Auth::user();

        if (!$user || !$user->isSuperAdmin()) {
            return redirect()->route('home')->with('error', 'You do not have admin access.');
        }

        return $next($request);
    }
}