Resolve #3418377 "Drupal10 support "

Closes #3418377

src/Controller/DatabaseTestConnectController.php

@@ -3,6 +3,7 @@
 namespace Drupal\multiple_databases\Controller;
 
 use Drupal\Core\Controller\ControllerBase;
+use Drupal\Core\Render\Markup;
 
 /**
  * Class DatabaseTestConnectController.
@@ -50,7 +51,7 @@ class DatabaseTestConnectController extends ControllerBase {
       'driver' => $entity->get('database_type')->value,
     ];
 
-    dpm($database);
+    \Drupal::messenger()->addStatus(Markup::create("<pre>" . print_r($database, 1)));
 
     return [
       '#type' => 'markup',