Issue #3161992 by Hardik_Patel_12, ravi.shankar, catch, longwave: Since symfony/http-foundation 5.1: The "Symfony\Component\HttpFoundation\Response::create()" method is deprecated, use "new Drupal\Core\Render\HtmlResponse()" instead

core/modules/big_pipe/tests/src/Unit/Render/ManyPlaceholderTest.php

@@ -31,7 +31,7 @@ class ManyPlaceholderTest extends UnitTestCase {
       $this->prophesize(EventDispatcherInterface::class)->reveal(),
       $this->prophesize(ConfigFactoryInterface::class)->reveal()
     );
-    $response = new BigPipeResponse(HtmlResponse::create());
+    $response = new BigPipeResponse(new HtmlResponse());
 
     // Add many placeholders.
     $many_placeholders = [];

core/modules/jsonapi/tests/src/Functional/ResourceResponseTestTrait.php

@@ -203,7 +203,7 @@ trait ResourceResponseTestTrait {
     $basic_cacheability = (new CacheableMetadata())
       ->addCacheTags($this->getExpectedCacheTags())
       ->addCacheContexts($this->getExpectedCacheContexts());
-    return static::decorateExpectedResponseForIncludedFields(ResourceResponse::create($individual_document), $resource_data['responses'])
+    return static::decorateExpectedResponseForIncludedFields(new ResourceResponse($individual_document), $resource_data['responses'])
       ->addCacheableDependency($basic_cacheability);
   }
 

core/modules/jsonapi/tests/src/Functional/ResourceTestBase.php

@@ -1253,7 +1253,7 @@ abstract class ResourceTestBase extends BrowserTestBase {
     $cacheability = static::getExpectedCollectionCacheability($this->account, $collection, NULL, $filtered);
     $cacheability->setCacheMaxAge($merged_response->getCacheableMetadata()->getCacheMaxAge());
 
-    $collection_response = ResourceResponse::create($merged_document);
+    $collection_response = new ResourceResponse($merged_document);
     $collection_response->addCacheableDependency($cacheability);
 
     if (is_null($included_paths)) {