From 48e96ba301493d51deb2d1e41d82d7a175c5b85b Mon Sep 17 00:00:00 2001
From: Sukhwinder Dhillon <sukhwinder33445@gmail.com>
Date: Tue, 3 May 2022 14:08:16 +0200
Subject: [PATCH] RequirementSet: Fix null returned instead int exception

fixes #4767
---
 modules/setup/library/Setup/RequirementSet.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/setup/library/Setup/RequirementSet.php b/modules/setup/library/Setup/RequirementSet.php
index 4c5bb121a..672fad454 100644
--- a/modules/setup/library/Setup/RequirementSet.php
+++ b/modules/setup/library/Setup/RequirementSet.php
@@ -290,7 +290,7 @@ class RequirementSet implements RecursiveIterator
      */
     public function valid(): bool
     {
-        return $this->key() !== null;
+        return key($this->requirements) !== null;
     }
 
     /**