From 83b0bef3a891e2304f9fe4cc832d3e5705b6fe31 Mon Sep 17 00:00:00 2001
From: neopheus <neopheus@gmail.com>
Date: Mon, 12 Sep 2022 12:56:45 +0200
Subject: [PATCH] Fix #2290

---
 src/PhpWord/TemplateProcessor.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/PhpWord/TemplateProcessor.php b/src/PhpWord/TemplateProcessor.php
index 664d4688..14c95b18 100644
--- a/src/PhpWord/TemplateProcessor.php
+++ b/src/PhpWord/TemplateProcessor.php
@@ -257,7 +257,7 @@ class TemplateProcessor
      */
     protected static function ensureUtf8Encoded($subject)
     {
-        if (!Text::isUTF8($subject)) {
+        if (!Text::isUTF8($subject) && !is_null($subject)) {
             $subject = utf8_encode($subject);
         }