diff --git a/fillpdf.services.yml b/fillpdf.services.yml
index 4cd99a3d8f72edb226586890de69c56eb9469414..42f83b1d53ed4b71e40bf4942d5582aa73496787 100644
--- a/fillpdf.services.yml
+++ b/fillpdf.services.yml
@@ -47,7 +47,7 @@ services:
 
   fillpdf.input_helper:
     class: Drupal\fillpdf\InputHelper
-    arguments: ["@config.factory", "@plugin.manager.fillpdf.pdf_backend"]
+    arguments: ["@config.factory", "@plugin.manager.fillpdf.pdf_backend", "@entity_type.manager"]
 
   fillpdf.shell_manager:
     class: Drupal\fillpdf\ShellManager
@@ -55,4 +55,4 @@ services:
 
   fillpdf.backend_proxy:
     class: Drupal\fillpdf\Service\BackendProxy
-    arguments: ['@fillpdf.token_resolver', '@plugin.manager.fillpdf.pdf_backend', '@config.factory']
+    arguments: ['@fillpdf.token_resolver', '@plugin.manager.fillpdf.pdf_backend', '@config.factory', '@entity_type.manager']
diff --git a/src/Controller/HandlePdfController.php b/src/Controller/HandlePdfController.php
index 1aabbb155895c6e5788179ed1cc1ad6e2b58e0ef..f6956d8b798fa7c7e286de0c4525f7929c57b85a 100644
--- a/src/Controller/HandlePdfController.php
+++ b/src/Controller/HandlePdfController.php
@@ -2,10 +2,12 @@
 
 namespace Drupal\fillpdf\Controller;
 
+use Drupal\Core\Config\ConfigFactoryInterface;
 use Drupal\Core\Link;
 use Drupal\Core\Url;
 use Drupal\Core\Controller\ControllerBase;
 use Drupal\Core\StreamWrapper\StreamWrapperInterface;
+use Drupal\Core\StreamWrapper\StreamWrapperManagerInterface;
 use Drupal\fillpdf\FillPdfContextManagerInterface;
 use Drupal\fillpdf\FillPdfFormInterface;
 use Drupal\fillpdf\FillPdfLinkManipulatorInterface;
@@ -72,6 +74,20 @@ class HandlePdfController extends ControllerBase {
    */
   protected $backendProxy;
 
+  /**
+   * Provides a StreamWrapper manager.
+   *
+   * @var \Drupal\Core\StreamWrapper\StreamWrapperManagerInterface
+   */
+  protected $streamWrapperManager;
+
+  /**
+   * The config factory.
+   *
+   * @var \Drupal\Core\Config\ConfigFactoryInterface
+   */
+  protected $configFactory;
+
   /**
    * Constructs a FillPdfBackendManager object.
    *
@@ -89,6 +105,10 @@ class HandlePdfController extends ControllerBase {
    *   The FillPDF action manager.
    * @param \Drupal\fillpdf\Service\BackendProxyInterface $backend_proxy
    *   The backend proxy.
+   * @param \Drupal\Core\StreamWrapper\StreamWrapperManagerInterface $stream_wrapper_manager
+   *   Provides a StreamWrapper manager.
+   * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
+   *   The configuration factory.
    */
   public function __construct(
     FillPdfLinkManipulatorInterface $link_manipulator,
@@ -97,7 +117,9 @@ class HandlePdfController extends ControllerBase {
     RequestStack $request_stack,
     PdfBackendManager $backend_manager,
     FillPdfActionPluginManager $action_manager,
-    BackendProxyInterface $backend_proxy
+    BackendProxyInterface $backend_proxy,
+    StreamWrapperManagerInterface $stream_wrapper_manager,
+    ConfigFactoryInterface $config_factory
   ) {
     $this->linkManipulator = $link_manipulator;
     $this->contextManager = $context_manager;
@@ -106,6 +128,8 @@ class HandlePdfController extends ControllerBase {
     $this->backendManager = $backend_manager;
     $this->actionManager = $action_manager;
     $this->backendProxy = $backend_proxy;
+    $this->streamWrapperManager = $stream_wrapper_manager;
+    $this->configFactory = $config_factory;
   }
 
   /**
@@ -119,7 +143,9 @@ class HandlePdfController extends ControllerBase {
       $container->get('request_stack'),
       $container->get('plugin.manager.fillpdf.pdf_backend'),
       $container->get('plugin.manager.fillpdf_action.processor'),
-      $container->get('fillpdf.backend_proxy')
+      $container->get('fillpdf.backend_proxy'),
+      $container->get('stream_wrapper_manager'),
+      $container->get('config.factory')
     );
   }
 
@@ -209,8 +235,8 @@ class HandlePdfController extends ControllerBase {
 
     // Determine the appropriate action for the PDF.
     $scheme = $fillpdf_form->getStorageScheme();
-    $is_available = array_key_exists($scheme, \Drupal::service('stream_wrapper_manager')->getWrappers(StreamWrapperInterface::WRITE_VISIBLE));
-    $is_allowed = in_array($scheme, \Drupal::config('fillpdf.settings')->get('allowed_schemes') ?: []);
+    $is_available = array_key_exists($scheme, $this->streamWrapperManager->getWrappers(StreamWrapperInterface::WRITE_VISIBLE));
+    $is_allowed = in_array($scheme, $this->configFactory->get('fillpdf.settings')->get('allowed_schemes') ?: []);
 
     if (empty($scheme)) {
       $action_plugin_id = 'download';
diff --git a/src/Form/FillPdfFormForm.php b/src/Form/FillPdfFormForm.php
index 267e11455db2ff3c833055afddbb114335c68897..48bd90ceb8219918f414af8372c00cef69a1aa93 100644
--- a/src/Form/FillPdfFormForm.php
+++ b/src/Form/FillPdfFormForm.php
@@ -10,8 +10,8 @@ use Drupal\Core\Entity\EntityTypeManager;
 use Drupal\Core\File\FileSystemInterface;
 use Drupal\Core\Form\FormStateInterface;
 use Drupal\Core\Link;
+use Drupal\Core\Render\RendererInterface;
 use Drupal\Core\Url;
-use Drupal\file\Entity\File;
 use Drupal\fillpdf\Component\Utility\FillPdf;
 use Drupal\fillpdf\FillPdfAdminFormHelperInterface;
 use Drupal\fillpdf\FillPdfLinkManipulatorInterface;
@@ -72,6 +72,13 @@ class FillPdfFormForm extends ContentEntityForm {
    */
   protected $tokenResolver;
 
+  /**
+   * The Renderer service.
+   *
+   * @var \Drupal\Core\Render\RendererInterface
+   */
+  protected $renderer;
+
   /**
    * {@inheritdoc}
    */
@@ -85,6 +92,7 @@ class FillPdfFormForm extends ContentEntityForm {
     EntityTypeManager $entity_type_manager,
     TokenResolverInterface $token_resolver,
     EntityTypeBundleInfoInterface $entity_type_bundle_info,
+    RendererInterface $renderer,
     TimeInterface $time
   ) {
     parent::__construct(
@@ -98,6 +106,7 @@ class FillPdfFormForm extends ContentEntityForm {
     $this->serializer = $fillpdf_serializer;
     $this->fileSystem = $file_system;
     $this->entityTypeManager = $entity_type_manager;
+    $this->renderer = $renderer;
     $this->tokenResolver = $token_resolver;
   }
 
@@ -115,6 +124,7 @@ class FillPdfFormForm extends ContentEntityForm {
       $container->get('entity_type.manager'),
       $container->get('fillpdf.token_resolver'),
       $container->get('entity_type.bundle.info'),
+      $container->get('renderer'),
       $container->get('datetime.time')
     );
   }
@@ -235,7 +245,7 @@ class FillPdfFormForm extends ContentEntityForm {
     $fid = $fillpdf_form->id();
 
     /** @var \Drupal\file\FileInterface $file_entity */
-    $file_entity = File::load($fillpdf_form->get('file')->first()->target_id);
+    $file_entity = $this->entityTypeManager->getStorage('file')->load($fillpdf_form->get('file')->first()->target_id);
     $pdf_info_weight = 0;
     $form['pdf_info'] = [
       '#type' => 'fieldset',
@@ -510,7 +520,7 @@ class FillPdfFormForm extends ContentEntityForm {
       $existing_fields = $entity->getFormFields();
 
       /** @var \Drupal\file\FileInterface $new_file */
-      $new_file = File::load($form_state->getValue('upload_pdf')['0']);
+      $new_file = $this->entityTypeManager->getStorage('file')->load($form_state->getValue('upload_pdf')['0']);
       $new_file->setPermanent();
       $new_file->save();
 
@@ -545,7 +555,7 @@ class FillPdfFormForm extends ContentEntityForm {
             '#items' => array_keys($non_matching_fields),
           ],
         ];
-        $this->messenger()->addWarning(\Drupal::service('renderer')->render($message));
+        $this->messenger()->addWarning($this->renderer->render($message));
       }
 
       $this->messenger()->addStatus($this->t('You might also want to update the <em>Filename pattern</em> field; this has not been changed.'));
diff --git a/src/Form/FillPdfOverviewForm.php b/src/Form/FillPdfOverviewForm.php
index 688ec8a5759dc86345abdd9331dad9620460f2d9..f2ca507ad1bfbf6ccd7744868bc45b548c24b07d 100644
--- a/src/Form/FillPdfOverviewForm.php
+++ b/src/Form/FillPdfOverviewForm.php
@@ -8,7 +8,7 @@ use Drupal\Core\File\FileSystemInterface;
 use Drupal\Core\Form\FormBase;
 use Drupal\Core\Form\FormStateInterface;
 use Drupal\Core\Url;
-use Drupal\file\Entity\File;
+use Drupal\Core\Entity\EntityTypeManager;
 use Drupal\fillpdf\InputHelperInterface;
 use Drupal\fillpdf\Component\Utility\FillPdf;
 use Drupal\fillpdf\Plugin\PdfBackendManager;
@@ -48,6 +48,13 @@ class FillPdfOverviewForm extends FormBase {
    */
   protected $inputHelper;
 
+  /**
+   * The Entity Type Manager.
+   *
+   * @var \Drupal\Core\Entity\EntityTypeManager
+   */
+  protected $entityTypeManager;
+
   /**
    * Constructs a FillPdfSettingsForm object.
    *
@@ -59,12 +66,21 @@ class FillPdfOverviewForm extends FormBase {
    *   The file system.
    * @param \Drupal\fillpdf\InputHelperInterface $input_helper
    *   The FillPDF input helper.
+   * @param \Drupal\Core\Entity\EntityTypeManager $entity_type_manager
+   *   The Entity type manager service.
    */
-  public function __construct(ModuleHandlerInterface $module_handler, PdfBackendManager $backend_manager, FileSystemInterface $file_system, InputHelperInterface $input_helper) {
+  public function __construct(
+    ModuleHandlerInterface $module_handler,
+    PdfBackendManager $backend_manager,
+    FileSystemInterface $file_system,
+    InputHelperInterface $input_helper,
+    EntityTypeManager $entity_type_manager
+  ) {
     $this->moduleHandler = $module_handler;
     $this->backendManager = $backend_manager;
     $this->fileSystem = $file_system;
     $this->inputHelper = $input_helper;
+    $this->entityTypeManager = $entity_type_manager;
   }
 
   /**
@@ -75,7 +91,8 @@ class FillPdfOverviewForm extends FormBase {
       $container->get('module_handler'),
       $container->get('plugin.manager.fillpdf.pdf_backend'),
       $container->get('file_system'),
-      $container->get('fillpdf.input_helper')
+      $container->get('fillpdf.input_helper'),
+      $container->get('entity_type.manager')
     );
   }
 
@@ -156,7 +173,7 @@ class FillPdfOverviewForm extends FormBase {
   public function submitForm(array &$form, FormStateInterface $form_state) {
     if ($form_state->getValue('upload_pdf')) {
       /** @var \Drupal\file\FileInterface $file */
-      $file = File::load($form_state->getValue('upload_pdf')['0']);
+      $file = $this->entityTypeManager->getStorage('file')->load($form_state->getValue('upload_pdf')['0']);
       $added = $this->inputHelper->attachPdfToForm($file);
 
       /** @var \Drupal\fillpdf\Entity\FillPdfForm $fillpdf_form */
diff --git a/src/Form/FillPdfSettingsForm.php b/src/Form/FillPdfSettingsForm.php
index 69f67032e2996a87e3bce4486ef641bb85a3827b..04d543b645df99d4947e1bc8b09544dd1438db09 100644
--- a/src/Form/FillPdfSettingsForm.php
+++ b/src/Form/FillPdfSettingsForm.php
@@ -15,6 +15,7 @@ use Drupal\fillpdf\ShellManager;
 use GuzzleHttp\Client;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 use Drupal\Core\Link;
+use Drupal\Core\Render\RendererInterface;
 use Drupal\fillpdf\Entity\FillPdfForm;
 
 /**
@@ -59,6 +60,13 @@ class FillPdfSettingsForm extends ConfigFormBase {
    */
   protected $shellManager;
 
+  /**
+   * The Renderer service.
+   *
+   * @var \Drupal\Core\Render\RendererInterface
+   */
+  protected $renderer;
+
   /**
    * Constructs a FillPdfSettingsForm object.
    *
@@ -74,6 +82,8 @@ class FillPdfSettingsForm extends ConfigFormBase {
    *   The FillPDF shell manager.
    * @param \Drupal\fillpdf\Plugin\PdfBackendManager $backend_manager
    *   The FillPDF backend manager.
+   * @param \Drupal\Core\Render\RendererInterface $renderer
+   *   The Renderer service.
    */
   public function __construct(
     ConfigFactoryInterface $config_factory,
@@ -81,7 +91,8 @@ class FillPdfSettingsForm extends ConfigFormBase {
     FillPdfAdminFormHelper $admin_form_helper,
     Client $http_client,
     ShellManager $shell_manager,
-    PdfBackendManager $backend_manager
+    PdfBackendManager $backend_manager,
+    RendererInterface $renderer
   ) {
     parent::__construct($config_factory);
 
@@ -90,6 +101,7 @@ class FillPdfSettingsForm extends ConfigFormBase {
     $this->httpClient = $http_client;
     $this->shellManager = $shell_manager;
     $this->definitions = $backend_manager->getDefinitions();
+    $this->renderer = $renderer;
   }
 
   /**
@@ -102,7 +114,8 @@ class FillPdfSettingsForm extends ConfigFormBase {
       $container->get('fillpdf.admin_form_helper'),
       $container->get('http_client'),
       $container->get('fillpdf.shell_manager'),
-      $container->get('plugin.manager.fillpdf.pdf_backend')
+      $container->get('plugin.manager.fillpdf.pdf_backend'),
+      $container->get('renderer')
     );
   }
 
@@ -184,7 +197,7 @@ class FillPdfSettingsForm extends ConfigFormBase {
             '#items' => $items,
           ],
         ];
-        $this->messenger()->addError(\Drupal::service('renderer')->renderPlain($error_message));
+        $this->messenger()->addError($this->renderer->renderPlain($error_message));
       }
 
       $this->logger('fillpdf')->critical('File storage %previous_scheme is no longer available.' . $count ? " $count FillPDF forms are defunct." : '', [
diff --git a/src/InputHelper.php b/src/InputHelper.php
index f0ab39b18a19f4c1f2549805829b440e96b7ce85..7918654dd96b2d7bbe4517e48106abff19b17929 100644
--- a/src/InputHelper.php
+++ b/src/InputHelper.php
@@ -4,7 +4,7 @@ namespace Drupal\fillpdf;
 
 use Drupal\Core\Config\ConfigFactoryInterface;
 use Drupal\file\FileInterface;
-use Drupal\file\Entity\File;
+use Drupal\Core\Entity\EntityTypeManager;
 use Drupal\fillpdf\Entity\FillPdfForm;
 use Drupal\fillpdf\Entity\FillPdfFormField;
 use Drupal\fillpdf\Plugin\PdfBackendManager;
@@ -30,6 +30,13 @@ class InputHelper implements InputHelperInterface {
    */
   protected $backendManager;
 
+  /**
+   * The Entity Type Manager.
+   *
+   * @var \Drupal\Core\Entity\EntityTypeManager
+   */
+  protected $entityTypeManager;
+
   /**
    * Constructs an InputHelper object.
    *
@@ -37,10 +44,13 @@ class InputHelper implements InputHelperInterface {
    *   The config factory service.
    * @param \Drupal\fillpdf\Plugin\PdfBackendManager $backend_manager
    *   The FillPDF backend manager.
+   * @param \Drupal\Core\Entity\EntityTypeManager $entity_type_manager
+   *   The Entity type manager service.
    */
-  public function __construct(ConfigFactoryInterface $config_factory, PdfBackendManager $backend_manager) {
+  public function __construct(ConfigFactoryInterface $config_factory, PdfBackendManager $backend_manager, EntityTypeManager $entity_type_manager) {
     $this->configManager = $config_factory;
     $this->backendManager = $backend_manager;
+    $this->entityTypeManager = $entity_type_manager;
   }
 
   /**
@@ -89,7 +99,7 @@ class InputHelper implements InputHelperInterface {
     $backend = $this->backendManager->createInstance($config->get('backend'), $config->get());
 
     // Attempt to parse the fields in the PDF.
-    $parsed_fields = $backend->parseFile(File::load($fillpdf_form->file->target_id));
+    $parsed_fields = $backend->parseFile($this->entityTypeManager->getStorage('file')->load($fillpdf_form->file->target_id));
 
     $unique_fields = [];
     foreach ((array) $parsed_fields as $field) {
diff --git a/src/Service/BackendProxy.php b/src/Service/BackendProxy.php
index ac850e6c0c9e9d830f49686b7a8e615ad7d5410d..d924b998256b7b8c6bf81b6d61007f2815beffe4 100644
--- a/src/Service/BackendProxy.php
+++ b/src/Service/BackendProxy.php
@@ -3,7 +3,7 @@
 namespace Drupal\fillpdf\Service;
 
 use Drupal\Core\Config\ConfigFactoryInterface;
-use Drupal\file\Entity\File;
+use Drupal\Core\Entity\EntityTypeManager;
 use Drupal\fillpdf\Component\Helper\FillPdfMappingHelper;
 use Drupal\fillpdf\FieldMapping\TextFieldMapping;
 use Drupal\fillpdf\FillPdfFormInterface;
@@ -35,6 +35,13 @@ class BackendProxy implements BackendProxyInterface {
    */
   protected $configFactory;
 
+  /**
+   * The Entity Type Manager.
+   *
+   * @var \Drupal\Core\Entity\EntityTypeManager
+   */
+  protected $entityTypeManager;
+
   /**
    * Constructs a BackendProxy object.
    *
@@ -44,11 +51,14 @@ class BackendProxy implements BackendProxyInterface {
    *   The plugin.manager.fillpdf.pdf_backend service.
    * @param \Drupal\Core\Config\ConfigFactoryInterface $configFactory
    *   The configuration factory.
+   * @param \Drupal\Core\Entity\EntityTypeManager $entity_type_manager
+   *   The Entity type manager service.
    */
-  public function __construct(TokenResolverInterface $tokenResolver, PdfBackendManager $backendManager, ConfigFactoryInterface $configFactory) {
+  public function __construct(TokenResolverInterface $tokenResolver, PdfBackendManager $backendManager, ConfigFactoryInterface $configFactory, EntityTypeManager $entity_type_manager) {
     $this->tokenResolver = $tokenResolver;
     $this->backendManager = $backendManager;
     $this->configFactory = $configFactory;
+    $this->entityTypeManager = $entity_type_manager;
   }
 
   /**
@@ -100,7 +110,7 @@ class BackendProxy implements BackendProxyInterface {
     // @todo Emit event (or call alter hook?) before populating PDF.
     // Rename fillpdf_merge_fields_alter() to fillpdf_populate_fields_alter().
     /** @var \Drupal\file\FileInterface $templateFile */
-    $templateFile = File::load($fillPdfForm->file->target_id);
+    $templateFile = $this->entityTypeManager->getStorage('file')->load($fillPdfForm->file->target_id);
 
     $mergedPdf = $backend->mergeFile($templateFile, $fieldMappings, $mergeOptions);