The PHPUnit\Util\XML class has been removed in PHPUnit 9.3.

Author: derrabus

Tests/Resources/TranslationFilesTest.php

@@ -12,6 +12,7 @@
 namespace Symfony\Component\Security\Core\Tests\Resources;
 
 use PHPUnit\Framework\TestCase;
+use PHPUnit\Util\Xml\Loader;
 
 class TranslationFilesTest extends TestCase
 {
@@ -20,7 +21,11 @@ class TranslationFilesTest extends TestCase
      */
     public function testTranslationFileIsValid($filePath)
     {
-        \PHPUnit\Util\XML::loadfile($filePath, false, false, true);
+        $loader = class_exists(Loader::class)
+            ? [new Loader(), 'loadFile']
+            : 'PHPUnit\Util\XML::loadfile';
+
+        $loader($filePath, false, false, true);
 
         $this->addToAssertionCount(1);
     }