Fixing notice showing up in the logs

modules/private_message_nodejs/src/Plugin/PrivateMessageConfigForm/PrivateMessageNodeJsPrivateMessageConfigForm.php

@@ -11,7 +11,7 @@ use Drupal\private_message\Plugin\PrivateMessageConfigForm\PrivateMessageConfigF
 use Symfony\Component\DependencyInjection\ContainerInterface;
 
 /**
- * Adds Private Message Nodejse settings to the Private Message settings page.
+ * Adds Private Message Nodejs settings to the Private Message settings page.
  *
  * @PrivateMessageConfigForm(
  *   id = "private_message_node_js_settings",
@@ -195,8 +195,8 @@ class PrivateMessageNodeJsPrivateMessageConfigForm extends PrivateMessageConfigF
 
     // If the user uploaded a icon, save it to a permanent location and set it
     // as the icon path.
-    $fid = $values['browser_push_notifications']['browser_notification_settings_wrapper']['browser_notification_icon_upload'][0];
-    if (!empty($fid)) {
+    $fid = isset($values['browser_push_notifications']['browser_notification_settings_wrapper']['browser_notification_icon_upload'][0]) ? $values['browser_push_notifications']['browser_notification_settings_wrapper']['browser_notification_icon_upload'][0] : FALSE;
+    if ($fid) {
       $file = $this->fileHandler->load($fid);
       $filename = file_unmanaged_copy($file->getFileUri());
       $settings->set('browser_notification_icon', $filename);