ACPT-826

Author: aa-kashk

app/code/Magento/AsyncConfig/Plugin/Controller/System/Config/SaveAsyncConfigPlugin.php

@@ -83,7 +83,7 @@ public function aroundExecute(Save $subject, callable $proceed)
             $configData = $subject->getConfigData();
             $this->asyncConfigPublisher->saveConfigData($configData);
             $this->messageManager->addSuccess(__('Configuration changes will be applied by consumer soon.'));
-            $subject->saveState($subject->getRequest()->getPost('config_state'));
+            $subject->_saveState($subject->getRequest()->getPost('config_state'));
             /** @var \Magento\Backend\Model\View\Result\Redirect $resultRedirect */
             $resultRedirect = $this->resultRedirectFactory->create();
             return $resultRedirect->setPath(

app/code/Magento/Config/Controller/Adminhtml/System/Config/Save.php

@@ -58,14 +58,11 @@ public function __construct(
     }
 
     /**
-     * Save state of configuration field sets
-     *
-     * @param array $configState
-     * @return bool
+     * @inheritDoc
      */
-    public function saveState($configState)
+    public function _saveState($configState = []): bool
     {
-        return $this->_saveState($configState);
+        return parent::_saveState($configState);
     }
 
     /**