From d5441da49a76a7164dd552a20ea2c2895c1b9622 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Roland=20H=C3=A4der?= <roland@mxchange.org>
Date: Wed, 22 Jun 2022 16:19:45 +0200
Subject: [PATCH] Fixed: - TypeError: "Argument 1 passed to
 Friendica\Util\XML::escape() must be of the   type string, null given, called
 in src/Util/XML.php line 171

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

diff --git a/src/Util/XML.php b/src/Util/XML.php
index 095d5cad7..7d1827763 100644
--- a/src/Util/XML.php
+++ b/src/Util/XML.php
@@ -168,7 +168,7 @@ class XML
 
 		foreach ($attributes as $key => $value) {
 			$attribute = $doc->createAttribute($key);
-			$attribute->value = self::escape($value);
+			$attribute->value = self::escape($value ?? '');
 			$element->appendChild($attribute);
 		}
 		return $element;