From b6676cc8cfce5804a6ae5928ab7373a17f5b75b5 Mon Sep 17 00:00:00 2001
From: Ben Upex <>
Date: Tue, 3 Aug 2021 14:53:14 +0100
Subject: [PATCH] Ensures isMainRequest method is available before call is made
 to allow deprecated isMasterRequest method to be called for Symfony 4

---
 src/Validator/DataCollectingValidator.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Validator/DataCollectingValidator.php b/src/Validator/DataCollectingValidator.php
index bc6eba9b..4b0ecde8 100644
--- a/src/Validator/DataCollectingValidator.php
+++ b/src/Validator/DataCollectingValidator.php
@@ -88,7 +88,9 @@ public function inContext(ExecutionContextInterface $context): ContextualValidat
 
     public function onKernelRequest(GetResponseEvent $event): void
     {
-        if ($event->isMainRequest()) {
+        if (method_exists($event, 'isMainRequest') && $event->isMainRequest()) {
+            $this->clearLastErrors();
+        } elseif ($event->isMasterRequest()) {
             $this->clearLastErrors();
         }
     }