bug #50498 [FrameworkBundle] ease migration to symfony 6.3 (lyrixx)

nicolas-grekas · nicolas-grekas · commit 14b10887282e · 2023-05-31T14:29:07.000+02:00
This PR was merged into the 6.3 branch. Discussion ---------- [FrameworkBundle] ease migration to symfony 6.3 | Q | A | ------------- | --- | Branch? | 6.3 | Bug fix? | kind of | New feature? | no | Deprecations? | no | Tickets | #50504 | License | MIT | Doc PR | - Commits ------- 06ab7ec [FrameworkBundle] ease migration to symfony 6.3
diff --git a/src/Symfony/Bundle/FrameworkBundle/FrameworkBundle.php b/src/Symfony/Bundle/FrameworkBundle/FrameworkBundle.php
@@ -98,7 +98,13 @@ public function boot()
         $_ENV['DOCTRINE_DEPRECATIONS'] = $_SERVER['DOCTRINE_DEPRECATIONS'] ??= 'trigger';
 
         $handler = ErrorHandler::register(null, false);
-        $this->container->get('debug.error_handler_configurator')->configure($handler);
+
+        // When upgrading an existing Symfony application from 6.2 to 6.3, and
+        // the cache is warmed up, the service is not available yet, so we need
+        // to check if it exists.
+        if ($this->container->has('debug.error_handler_configurator')) {
+            $this->container->get('debug.error_handler_configurator')->configure($handler);
+        }
 
         if ($this->container->getParameter('kernel.http_method_override')) {
             Request::enableHttpMethodParameterOverride();
