fixed disabled guest checkout issue in case of downloadable product #23971

Author: rani-webkul

app/code/Magento/Downloadable/Observer/IsAllowedGuestCheckoutObserver.php

@@ -15,6 +15,11 @@ class IsAllowedGuestCheckoutObserver implements ObserverInterface
      */
     const XML_PATH_DISABLE_GUEST_CHECKOUT = 'catalog/downloadable/disable_guest_checkout';
 
+    /**
+     *  Xml path to get downloadable Shareable setting
+     */
+    const XML_PATH_DOWNLOADABLE_SHAREABLE = 'catalog/downloadable/shareable';
+
     /**
      * Core store config
      *
@@ -46,6 +51,10 @@ public function execute(\Magento\Framework\Event\Observer $observer)
             self::XML_PATH_DISABLE_GUEST_CHECKOUT,
             ScopeInterface::SCOPE_STORE,
             $store
+        ) && $this->_scopeConfig->isSetFlag(
+            self::XML_PATH_DOWNLOADABLE_SHAREABLE,
+            ScopeInterface::SCOPE_STORE,
+            $store
         )) {
             return $this;
         }