Issue #3430593: Make compatible with Drupal 11

composer.json

@@ -11,7 +11,7 @@
     ],
     "minimum-stability": "dev",
     "require": {
-        "drupal/core": "^9.4 || ^10",
+        "drupal/core": "^10.1 || ^11.0",
         "drupal/token": "^1.0"
     },
     "require-dev": {

fillpdf.info.yml

 name: 'FillPDF'
 type: module
 description: 'Allows users to populate PDF forms from website data.'
-core_version_requirement: ^9.4 || ^10
+core_version_requirement: ^10.1 || ^11.0
 package: Other
 configure: fillpdf.settings
 dependencies:

src/Plugin/PdfBackend/LocalServerPdfBackend.php

@@ -3,6 +3,7 @@
 namespace Drupal\fillpdf\Plugin\PdfBackend;
 
 use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
+use Drupal\Core\Utility\Error;
 use Drupal\file\FileInterface;
 use Drupal\fillpdf\FieldMapping\ImageFieldMapping;
 use Drupal\fillpdf\FieldMapping\TextFieldMapping;
@@ -169,7 +170,7 @@ class LocalServerPdfBackend extends PdfBackendBase implements ContainerFactoryPl
       return base64_decode($decoded['pdf']);
     }
     catch (RequestException $e) {
-      watchdog_exception('fillpdf', $e);
+      Error::logException(\Drupal::logger('fillpdf'), $e);
       return NULL;
     }
   }