Issue #3257042: Page not displaying (404 error shown)

src/Controller/PageDisplayController.php

@@ -61,15 +61,15 @@ class PageDisplayController extends ControllerBase {
   public function content() {
     $data = [];
     $method = 'POST';
-    $url = 'https://pageserve.co' . $this->request->server->get('REQUEST_URI');
+    $url = 'https://pageserve.co' . $this->request->getRequestUri();
     $integration = 'drupal';
-    $host = $this->request->server->get('HTTP_HOST');
+    $host = $this->request->getHost();
     $headers['integration'] = $integration;
     $headers['x-instapage-host'] = $host;
     $headers['x-cms-version'] = \Drupal::VERSION;
     $data['integration'] = $integration;
-    $data['useragent'] = $this->request->server->get('HTTP_USER_AGENT');
-    $data['ip'] = $this->request->server->get('REMOTE_ADDR');
+    $data['useragent'] = $this->request->headers->get('User-Agent');
+    $data['ip'] = $this->request->getClientIp();
     $data['requestHost'] = $host;
 
     try {