From f05bf6b37371e96b922deaa93c3674b2c4cb97a8 Mon Sep 17 00:00:00 2001
From: demeritcowboy <demeritcowboy@hotmail.com>
Date: Mon, 2 Aug 2021 12:02:38 -0400
Subject: [PATCH] fix empty message

---
 CRM/Upgrade/Incremental/php/FiveFortyOne.php | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/CRM/Upgrade/Incremental/php/FiveFortyOne.php b/CRM/Upgrade/Incremental/php/FiveFortyOne.php
index fedf856c16..aaa958a127 100644
--- a/CRM/Upgrade/Incremental/php/FiveFortyOne.php
+++ b/CRM/Upgrade/Incremental/php/FiveFortyOne.php
@@ -44,7 +44,10 @@ class CRM_Upgrade_Incremental_php_FiveFortyOne extends CRM_Upgrade_Incremental_B
    */
   public function setPostUpgradeMessage(&$postUpgradeMessage, $rev) {
     $templateUpgrader = new CRM_Upgrade_Incremental_MessageTemplates($rev);
-    $postUpgradeMessage .= '<ul><li>' . htmlspecialchars($templateUpgrader->getMessageTemplateWarning('contribution_invoice_receipt', '$display_name', 'contact.display_name')) . '</li></ul>';
+    $upgradeMessage = $templateUpgrader->getMessageTemplateWarning('contribution_invoice_receipt', '$display_name', 'contact.display_name');
+    if (!empty($upgradeMessage)) {
+      $postUpgradeMessage .= '<ul><li>' . htmlspecialchars($upgradeMessage) . '</li></ul>';
+    }
     // Example: Generate a post-upgrade message.
     // if ($rev == '5.12.34') {
     //   $postUpgradeMessage .= '<br /><br />' . ts("By default, CiviCRM now disables the ability to import directly from SQL. To use this feature, you must explicitly grant permission 'import SQL datasource'.");
-- 
2.25.1