From 0ff3f9bf04b1c3ab5c0b0e42250fa1a16a39c387 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jan=20Lys=C3=BD?= <jan.lysy@automattic.com>
Date: Tue, 6 Apr 2021 08:49:35 +0200
Subject: [PATCH] Add check that GET array key exists

[MAILPOET-3550]
---
 lib/Config/Router.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Config/Router.php b/lib/Config/Router.php
index 48f7bea8dd..6d99154cff 100644
--- a/lib/Config/Router.php
+++ b/lib/Config/Router.php
@@ -14,7 +14,7 @@ class Router {
 
   public function checkRedirects(): void {
     $url = null;
-    if ($_GET['page'] === 'mailpoet-newsletters') {
+    if (isset($_GET['page']) && $_GET['page'] === 'mailpoet-newsletters') {
       $url = $this->checkNewslettersRedirect();
     }
     if (!$url) return;