diff -u b/core/modules/file/tests/src/Kernel/Formatter/FileAudioFormatterTest.php b/core/modules/file/tests/src/Kernel/Formatter/FileAudioFormatterTest.php
--- b/core/modules/file/tests/src/Kernel/Formatter/FileAudioFormatterTest.php
+++ b/core/modules/file/tests/src/Kernel/Formatter/FileAudioFormatterTest.php
@@ -133,8 +133,9 @@
$this->fieldName
diff -u b/core/modules/file/tests/src/Kernel/Formatter/FileVideoFormatterTest.php b/core/modules/file/tests/src/Kernel/Formatter/FileVideoFormatterTest.php
--- b/core/modules/file/tests/src/Kernel/Formatter/FileVideoFormatterTest.php
+++ b/core/modules/file/tests/src/Kernel/Formatter/FileVideoFormatterTest.php
@@ -133,8 +133,9 @@
$this->fieldName