diff --git a/composer.json b/composer.json
index 15ca152..020323a 100644
--- a/composer.json
+++ b/composer.json
@@ -3,7 +3,7 @@
   "description": "User Access Manager plugin for Wordpress",
   "type": "wordpress-plugin",
   "license": "GPL-2.0",
-  "version": "2.2.19",
+  "version": "2.2.20",
   "authors": [
     {
       "name": "Alexander Schneider",
diff --git a/package.json b/package.json
index da9051a..112aa8c 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "user-access-manager",
-  "version": "2.2.19",
+  "version": "2.2.20",
   "description": "[![Build Status](https://travis-ci.org/GM-Alex/user-access-manager.svg)](https://travis-ci.org/GM-Alex/user-access-manager)",
   "main": "index.js",
   "directories": {
diff --git a/readme.txt b/readme.txt
index a4294d8..07264f4 100644
--- a/readme.txt
+++ b/readme.txt
@@ -4,7 +4,7 @@ Donate link: https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_i
 Tags: admin, access, member area, members, member, member access, page, pages, post, posts, private, privacy, restrict, user, user access manager, user management
 Requires at least: 4.7
 Tested up to: 6.1
-Stable tag: 2.2.19
+Stable tag: 2.2.20
 
 With the "User Access Manager"-plugin you can manage the access to your posts, pages and files.
 
@@ -63,6 +63,8 @@ Here you found the changes in each version.
 
     Version     Date        Changes
 
+    2.2.20      2023/03/08  Fix warning
+
     2.2.19      2022/11/18  Add try out link
 
     2.2.18      2022/11/14  Fix issue with label id. Thanks to elbakkali
diff --git a/src/UserAccessManager.php b/src/UserAccessManager.php
index 87e3835..18e8765 100644
--- a/src/UserAccessManager.php
+++ b/src/UserAccessManager.php
@@ -50,7 +50,7 @@
  */
 class UserAccessManager
 {
-    const VERSION = '2.2.19';
+    const VERSION = '2.2.20';
     const DB_VERSION = '1.6.1';
 
     /**
diff --git a/src/UserGroup/DynamicUserGroup.php b/src/UserGroup/DynamicUserGroup.php
index 3fb79b3..464c2b6 100644
--- a/src/UserGroup/DynamicUserGroup.php
+++ b/src/UserGroup/DynamicUserGroup.php
@@ -105,7 +105,8 @@ public function getName(): string
                 $this->name = TXT_UAM_ADD_DYNAMIC_NOT_LOGGED_IN_USERS;
             } elseif ($this->type === self::USER_TYPE) {
                 $userData = $this->wordpress->getUserData($this->id);
-                $this->name = TXT_UAM_USER . ": {$userData->display_name} ($userData->user_login)";
+                $userName = $userData !== false ? "$userData->display_name ($userData->user_login)" : '';
+                $this->name = TXT_UAM_USER . ": $userName";
             } elseif ($this->type === self::ROLE_TYPE) {
                 $roles = $this->wordpress->getRoles()->roles;
                 $this->name = TXT_UAM_ROLE . ': ';
diff --git a/user-access-manager.php b/user-access-manager.php
index fbeae10..62c53ec 100644
--- a/user-access-manager.php
+++ b/user-access-manager.php
@@ -3,7 +3,7 @@
  * Plugin Name: User Access Manager
  * Plugin URI: https://wordpress.org/plugins/user-access-manager/
  * Author URI: https://twitter.com/GM_Alex
- * Version: 2.2.19
+ * Version: 2.2.20
  * Requires PHP: 7.2
  * Author: Alexander Schneider
  * Description: Manage the access to your posts, pages, categories and files.