diff --git a/core/modules/media/tests/src/FunctionalJavascript/MediaDisplayTest.php b/core/modules/media/tests/src/FunctionalJavascript/MediaDisplayTest.php
index fdc8884e3fd184fe3474b5bb950746b4aba4d9ae..b1fc5baaf7d1435dd43a550149108a3193ba4148 100644
--- a/core/modules/media/tests/src/FunctionalJavascript/MediaDisplayTest.php
+++ b/core/modules/media/tests/src/FunctionalJavascript/MediaDisplayTest.php
@@ -115,7 +115,7 @@ public function testMediaDisplay(): void {
     // visually hidden, and there is no link to the image file.
     /** @var \Drupal\Core\File\FileUrlGeneratorInterface $file_url_generator */
     $file_url_generator = \Drupal::service('file_url_generator');
-    $expected_image_src = $file_url_generator->generateString(\Drupal::token()->replace('public://styles/large/public/[date:custom:Y]-[date:custom:m]/example_1.jpeg'));
+    $expected_image_src = $file_url_generator->generate(\Drupal::token()->replace('public://styles/large/public/[date:custom:Y]-[date:custom:m]/example_1.jpeg'))->toString();
     $this->assertStringContainsString($expected_image_src, $media_image->getAttribute('src'));
     $field = $assert_session->elementExists('xpath', '/div[1]', $media_item);
     $assert_session->elementExists('xpath', '/div[@class="visually-hidden"]', $field);
diff --git a/core/modules/media/tests/src/FunctionalJavascript/MediaSourceImageTest.php b/core/modules/media/tests/src/FunctionalJavascript/MediaSourceImageTest.php
index 246498429127d4f972ffb85c2d6187a95c577c2d..651e25d090dfa3754554923711d66e0a2c3434ee 100644
--- a/core/modules/media/tests/src/FunctionalJavascript/MediaSourceImageTest.php
+++ b/core/modules/media/tests/src/FunctionalJavascript/MediaSourceImageTest.php
@@ -79,7 +79,7 @@ public function testMediaImageSource(): void {
     $image_element = $field->find('css', 'img');
     /** @var \Drupal\Core\File\FileUrlGeneratorInterface $file_url_generator */
     $file_url_generator = \Drupal::service('file_url_generator');
-    $expected_image_src = $file_url_generator->generateString(\Drupal::token()->replace('public://styles/large/public/[date:custom:Y]-[date:custom:m]/example_1.jpeg'));
+    $expected_image_src = $file_url_generator->generate(\Drupal::token()->replace('public://styles/large/public/[date:custom:Y]-[date:custom:m]/example_1.jpeg'))->toString();
     $this->assertStringContainsString($expected_image_src, $image_element->getAttribute('src'));
     $assert_session->elementNotExists('css', 'a', $field);
 
diff --git a/core/modules/media/tests/src/FunctionalJavascript/MediaStandardProfileTest.php b/core/modules/media/tests/src/FunctionalJavascript/MediaStandardProfileTest.php
index 2038495a8f4cb35189f58907a851f0f313f40f59..e85c357bc4eefd71d44b707a5137cf3d957beae3 100644
--- a/core/modules/media/tests/src/FunctionalJavascript/MediaStandardProfileTest.php
+++ b/core/modules/media/tests/src/FunctionalJavascript/MediaStandardProfileTest.php
@@ -162,7 +162,7 @@ protected function audioTest() {
     $audio_element = $assert_session->elementExists('css', 'div.media--type-audio .field--name-field-media-audio-file audio > source');
     /** @var \Drupal\Core\File\FileUrlGeneratorInterface $file_url_generator */
     $file_url_generator = \Drupal::service('file_url_generator');
-    $expected_audio_src = $file_url_generator->generateString(\Drupal::token()->replace('public://[date:custom:Y]-[date:custom:m]/' . $test_filename));
+    $expected_audio_src = $file_url_generator->generate(\Drupal::token()->replace('public://[date:custom:Y]-[date:custom:m]/' . $test_filename))->toString();
     $this->assertSame($expected_audio_src, $audio_element->getAttribute('src'));
 
     // Assert the media name is updated through the field mapping when changing
@@ -189,7 +189,7 @@ protected function audioTest() {
     // Assert the audio file is present inside the media element and that its
     // src attribute matches the updated audio file.
     $audio_element = $assert_session->elementExists('css', 'div.media--type-audio .field--name-field-media-audio-file audio > source');
-    $expected_audio_src = $file_url_generator->generateString(\Drupal::token()->replace('public://[date:custom:Y]-[date:custom:m]/' . $test_filename_updated));
+    $expected_audio_src = $file_url_generator->generate(\Drupal::token()->replace('public://[date:custom:Y]-[date:custom:m]/' . $test_filename_updated))->toString();
     $this->assertSame($expected_audio_src, $audio_element->getAttribute('src'));
   }
 
@@ -251,7 +251,7 @@ protected function imageTest() {
     $image_element = $assert_session->elementExists('css', 'div.media--type-image img');
     /** @var \Drupal\Core\File\FileUrlGeneratorInterface $file_url_generator */
     $file_url_generator = \Drupal::service('file_url_generator');
-    $expected_image_src = $file_url_generator->generateString(\Drupal::token()->replace('public://styles/large/public/[date:custom:Y]-[date:custom:m]/' . $image_media_name));
+    $expected_image_src = $file_url_generator->generate(\Drupal::token()->replace('public://styles/large/public/[date:custom:Y]-[date:custom:m]/' . $image_media_name))->toString();
 
     $this->assertStringContainsString($expected_image_src, $image_element->getAttribute('src'));
     $assert_session->elementExists('css', '.field--name-field-media-image .field__label.visually-hidden');
@@ -284,7 +284,7 @@ protected function imageTest() {
     // src attribute uses the large image style, the label is visually hidden,
     // and there is no link to the image file.
     $image_element = $assert_session->elementExists('css', 'div.media--type-image img');
-    $expected_image_src = $file_url_generator->generateString(\Drupal::token()->replace('public://styles/large/public/[date:custom:Y]-[date:custom:m]/' . $image_media_name_updated));
+    $expected_image_src = $file_url_generator->generate(\Drupal::token()->replace('public://styles/large/public/[date:custom:Y]-[date:custom:m]/' . $image_media_name_updated))->toString();
     $this->assertStringContainsString($expected_image_src, $image_element->getAttribute('src'));
     $assert_session->elementExists('css', '.field--name-field-media-image .field__label.visually-hidden');
     $assert_session->elementNotExists('css', '.field--name-field-media-image a');
@@ -538,7 +538,7 @@ protected function videoTest() {
     $video_element = $assert_session->elementExists('css', 'div.media--type-video .field--name-field-media-video-file video > source');
     /** @var \Drupal\Core\File\FileUrlGeneratorInterface $file_url_generator */
     $file_url_generator = \Drupal::service('file_url_generator');
-    $expected_video_src = $file_url_generator->generateString(\Drupal::token()->replace('public://[date:custom:Y]-[date:custom:m]/' . $test_filename));
+    $expected_video_src = $file_url_generator->generate(\Drupal::token()->replace('public://[date:custom:Y]-[date:custom:m]/' . $test_filename))->toString();
     $this->assertSame($expected_video_src, $video_element->getAttribute('src'));
 
     // Assert the media name is updated through the field mapping when changing
@@ -565,7 +565,7 @@ protected function videoTest() {
     // Assert the video element is present inside the media element and that its
     // src attribute matches the updated video file.
     $video_element = $assert_session->elementExists('css', 'div.media--type-video .field--name-field-media-video-file video > source');
-    $expected_video_src = $file_url_generator->generateString(\Drupal::token()->replace('public://[date:custom:Y]-[date:custom:m]/' . $test_filename_updated));
+    $expected_video_src = $file_url_generator->generate(\Drupal::token()->replace('public://[date:custom:Y]-[date:custom:m]/' . $test_filename_updated))->toString();
     $this->assertSame($expected_video_src, $video_element->getAttribute('src'));
   }