add basic trust host middleware

app/Http/Kernel.php

@@ -14,6 +14,7 @@ class Kernel extends HttpKernel
      * @var array
      */
     protected $middleware = [
+        // \App\Http\Middleware\TrustHosts::class,
         \App\Http\Middleware\TrustProxies::class,
         \Fruitcake\Cors\HandleCors::class,
         \App\Http\Middleware\CheckForMaintenanceMode::class,

app/Http/Middleware/TrustHosts.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use Illuminate\Http\Middleware\TrustHosts as Middleware;
+
+class TrustHosts extends Middleware
+{
+    /**
+     * Get the host patterns that should be trusted.
+     *
+     * @return array
+     */
+    public function hosts()
+    {
+        return [
+            $this->allSubdomainsOfApplicationUrl(),
+        ];
+    }
+}