How to Fix Infinite Loop Detected Issue on Checkout in Magento 2
When running an Ecommerce business on Magento 2, encountering technical issues can disrupt the seamless shopping experience for your customers. One such issue is the “Infinite Loop Detected” error during the checkout process. This error can prevent customers from successfully completing their purchases and negatively impact your sales. In this blog post, we will guide you through the steps to fix the Infinite Loop Detected issue on the checkout page in Magento 2, ensuring a smooth and uninterrupted checkout process for your customers.
Introducing the Infinite Loop Detected issue
The Infinite Loop Detected error occurs when customers fill in their payment card information and select “Place Order.” There are also cases where the error occurs when selecting “Place Order” with a discount code applied to the order. In such instances, Magento displays the following notification: Infinite loop detected, review the trace for the looping path.
Alternatively, the notification may appear as shown in the image below: Internal Error. Details are available in Magento log file. Report ID:…
Access var/log to check and you will see the following: main.CRITICAL: LogicException: Infinite loop detected, review the trace for the looping path in /var/www/reward/vendor/magento/module-checkout/Model/Session.php:241
You will know that the error is in the file vendor/magento/module-checkout/Model/Session.php
Solutions to Fix the Infinite Loop Detected Issue on Checkout in Magento 2
The quickest way to resolve this issue is to access the file vendor/magento/module-checkout/Model/Session.php and comment out line 278:
// $quote->collectTotals();
This is the line of code that causes the error. Actually, it is not needed in this file, so you need to comment on this line of code and save the file
However, making modifications directly in the core Magento file may be lost during updates. To ensure that your changes are not lost, it is recommended to override it through a custom module. Here’s how you can do it:
Step 1: Create the file app\code\Vendor\Extension\etc\di.xml with the following code:
<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../../../../../lib/internal/Magento/Framework/ObjectManager/etc/config.xsd">
<preference for="Magento\Checkout\Model\Session" type="Vendor\Extension\Model\Session" />
</config>
Step 2: Create the file app\code\Vendor\Extension\Model\Session.php and add the following code:
<?php
namespace Vendor\Extension\Model;
use Magento\Customer\Api\Data\CustomerInterface;
use Magento\Framework\App\ObjectManager;
use Magento\Framework\Exception\NoSuchEntityException;
use Magento\Quote\Api\Data\CartInterface;
use Magento\Quote\Model\Quote;
use Magento\Quote\Model\QuoteIdMaskFactory;
use Psr\Log\LoggerInterface;
class Session extends \Magento\Checkout\Model\Session
{
const CHECKOUT_STATE_BEGIN = 'begin';
protected $_quote;
protected $_customer;
protected $_loadInactive = false;
protected $_order;
protected $_orderFactory;
protected $_customerSession;
protected $quoteRepository;
protected $_remoteAddress;
protected $_eventManager;
protected $_storeManager;
protected $customerRepository;
protected $quoteIdMaskFactory;
protected $isQuoteMasked;
protected $quoteFactory;
private $isLoading = false;
private $logger;
public function __construct(
\Magento\Framework\App\Request\Http $request,
\Magento\Framework\Session\SidResolverInterface $sidResolver,
\Magento\Framework\Session\Config\ConfigInterface $sessionConfig,
\Magento\Framework\Session\SaveHandlerInterface $saveHandler,
\Magento\Framework\Session\ValidatorInterface $validator,
\Magento\Framework\Session\StorageInterface $storage,
\Magento\Framework\Stdlib\CookieManagerInterface $cookieManager,
\Magento\Framework\Stdlib\Cookie\CookieMetadataFactory $cookieMetadataFactory,
\Magento\Framework\App\State $appState,
\Magento\Sales\Model\OrderFactory $orderFactory,
\Magento\Customer\Model\Session $customerSession,
\Magento\Quote\Api\CartRepositoryInterface $quoteRepository,
\Magento\Framework\HTTP\PhpEnvironment\RemoteAddress $remoteAddress,
\Magento\Framework\Event\ManagerInterface $eventManager,
\Magento\Store\Model\StoreManagerInterface $storeManager,
\Magento\Customer\Api\CustomerRepositoryInterface $customerRepository,
QuoteIdMaskFactory $quoteIdMaskFactory,
\Magento\Quote\Model\QuoteFactory $quoteFactory,
LoggerInterface $logger = null)
{
$this->_orderFactory = $orderFactory;
$this->_customerSession = $customerSession;
$this->quoteRepository = $quoteRepository;
$this->_remoteAddress = $remoteAddress;
$this->_eventManager = $eventManager;
$this->_storeManager = $storeManager;
$this->customerRepository = $customerRepository;
$this->quoteIdMaskFactory = $quoteIdMaskFactory;
$this->quoteFactory = $quoteFactory;
parent::__construct(
$request,
$sidResolver,
$sessionConfig,
$saveHandler,
$validator,
$storage,
$cookieManager,
$cookieMetadataFactory,
$appState,
$orderFactory,
$customerSession,
$quoteRepository,
$remoteAddress,
$eventManager,
$storeManager,
$customerRepository,
$quoteIdMaskFactory,
$quoteFactory
);
$this->logger = $logger ?: ObjectManager::getInstance()
->get(LoggerInterface::class);
}
public function setCustomerData($customer)
{
$this->_customer = $customer;
return $this;
}
public function hasQuote()
{
return isset($this->_quote);
}
public function setLoadInactive($load = true)
{
$this->_loadInactive = $load;
return $this;
}
public function getQuote()
{
$this->_eventManager->dispatch('custom_quote_process', ['checkout_session' => $this]);
if ($this->_quote === null)
{
if ($this->isLoading)
{
throw new \LogicException("Infinite loop detected, review the trace for the looping path");
}
$this->isLoading = true;
$quote = $this->quoteFactory->create();
if ($this->getQuoteId())
{
try
{
if ($this->_loadInactive)
{
$quote = $this->quoteRepository->get($this->getQuoteId());
}
else
{
$quote = $this->quoteRepository->getActive($this->getQuoteId());
}
$customerId = $this->_customer
? $this->_customer->getId()
: $this->_customerSession->getCustomerId();
if ($quote->getData('customer_id') && (int)$quote->getData('customer_id') !== (int)$customerId)
{
$quote = $this->quoteFactory->create();
$this->setQuoteId(null);
}
if ($quote->getQuoteCurrencyCode() != $this->_storeManager->getStore()->getCurrentCurrencyCode())
{
$quote->setStore($this->_storeManager->getStore());
$this->quoteRepository->save($quote->collectTotals());
$quote = $this->quoteRepository->get($this->getQuoteId());
}
if ($quote->getTotalsCollectedFlag() === false)
{
// $quote->collectTotals();
}
}
catch (NoSuchEntityException $e)
{
$this->setQuoteId(null);
}
}
if (!$this->getQuoteId())
{
if ($this->_customerSession->isLoggedIn() || $this->_customer)
{
$quoteByCustomer = $this->getQuoteByCustomer();
if ($quoteByCustomer !== null)
{
$this->setQuoteId($quoteByCustomer->getId());
$quote = $quoteByCustomer;
}
}
else
{
$quote->setIsCheckoutCart(true);
$quote->setCustomerIsGuest(1);
$this->_eventManager->dispatch('checkout_quote_init', ['quote' => $quote]);
}
}
if ($this->_customer)
{
$quote->setCustomer($this->_customer);
}
elseif ($this->_customerSession->isLoggedIn())
{
$quote->setCustomer($this->customerRepository->getById($this->_customerSession->getCustomerId()));
}
$quote->setStore($this->_storeManager->getStore());
$this->_quote = $quote;
$this->isLoading = false;
}
if (!$this->isQuoteMasked() && !$this->_customerSession->isLoggedIn() && $this->getQuoteId())
{
$quoteId = $this->getQuoteId();
$quoteIdMask = $this->quoteIdMaskFactory->create()->load($quoteId, 'quote_id');
if ($quoteIdMask->getMaskedId() === null)
{
$quoteIdMask->setQuoteId($quoteId)->save();
}
$this->setIsQuoteMasked(true);
}
$remoteAddress = $this->_remoteAddress->getRemoteAddress();
if ($remoteAddress)
{
$this->_quote->setRemoteIp($remoteAddress);
$xForwardIp = $this->request->getServer('HTTP_X_FORWARDED_FOR');
$this->_quote->setXForwardedFor($xForwardIp);
}
return $this->_quote;
}
protected function _getQuoteIdKey()
{
return 'quote_id_' . $this->_storeManager->getStore()->getWebsiteId();
}
public function setQuoteId($quoteId)
{
$this->storage->setData($this->_getQuoteIdKey(), $quoteId);
}
public function getQuoteId()
{
return $this->getData($this->_getQuoteIdKey());
}
public function loadCustomerQuote()
{
if (!$this->_customerSession->getCustomerId())
{
return $this;
}
$this->_eventManager->dispatch('load_customer_quote_before', ['checkout_session' => $this]);
try
{
$customerQuote = $this->quoteRepository->getForCustomer($this->_customerSession->getCustomerId());
}
catch (NoSuchEntityException $e)
{
$customerQuote = $this->quoteFactory->create();
}
$customerQuote->setStoreId($this->_storeManager->getStore()->getId());
if ($customerQuote->getId() && $this->getQuoteId() != $customerQuote->getId())
{
if ($this->getQuoteId())
{
$quote = $this->getQuote();
$quote->setCustomerIsGuest(0);
$this->quoteRepository->save(
$customerQuote->merge($quote)->collectTotals()
);
$newQuote = $this->quoteRepository->get($customerQuote->getId());
$this->quoteRepository->save(
$newQuote->collectTotals()
);
$customerQuote = $newQuote;
}
$this->setQuoteId($customerQuote->getId());
if ($this->_quote)
{
$this->quoteRepository->delete($this->_quote);
}
$this->_quote = $customerQuote;
}
else
{
$this->getQuote()->getBillingAddress();
$this->getQuote()->getShippingAddress();
$this->getQuote()->setCustomer($this->_customerSession->getCustomerDataObject())
->setCustomerIsGuest(0)
->setTotalsCollectedFlag(false)
->collectTotals();
$this->quoteRepository->save($this->getQuote());
}
return $this;
}
public function setStepData($step, $data, $value = null)
{
$steps = $this->getSteps();
if ($value === null)
{
if (is_array($data))
{
$steps[$step] = $data;
}
}
else
{
if (!isset($steps[$step]))
{
$steps[$step] = [];
}
if (is_string($data))
{
$steps[$step][$data] = $value;
}
}
$this->setSteps($steps);
return $this;
}
public function getStepData($step = null, $data = null)
{
$steps = $this->getSteps();
if ($step === null)
{
return $steps;
}
if (!isset($steps[$step]))
{
return false;
}
if ($data === null)
{
return $steps[$step];
}
if (!is_string($data) || !isset($steps[$step][$data]))
{
return false;
}
return $steps[$step][$data];
}
public function clearQuote()
{
$this->_eventManager->dispatch('checkout_quote_destroy', ['quote' => $this->getQuote()]);
$this->_quote = null;
$this->setQuoteId(null);
$this->setLastSuccessQuoteId(null);
return $this;
}
public function clearStorage()
{
parent::clearStorage();
$this->_quote = null;
return $this;
}
public function clearHelperData()
{
$this->setRedirectUrl(null)->setLastOrderId(null)->setLastRealOrderId(null)->setAdditionalMessages(null);
}
public function resetCheckout()
{
$this->setCheckoutState(self::CHECKOUT_STATE_BEGIN);
return $this;
}
public function replaceQuote($quote)
{
$this->_quote = $quote;
$this->setQuoteId($quote->getId());
return $this;
}
public function getLastRealOrder()
{
$orderId = $this->getLastRealOrderId();
if ($this->_order !== null && $orderId == $this->_order->getIncrementId())
{
return $this->_order;
}
$this->_order = $this->_orderFactory->create();
if ($orderId)
{
$this->_order->loadByIncrementId($orderId);
}
return $this->_order;
}
public function restoreQuote()
{
$order = $this->getLastRealOrder();
if ($order->getId())
{
try
{
$quote = $this->quoteRepository->get($order->getQuoteId());
$quote->setIsActive(1)->setReservedOrderId(null);
$this->quoteRepository->save($quote);
$this->replaceQuote($quote)->unsLastRealOrderId();
$this->_eventManager->dispatch('restore_quote', ['order' => $order, 'quote' => $quote]);
return true;
}
catch (NoSuchEntityException $e)
{
$this->logger->critical($e);
}
}
return false;
}
protected function setIsQuoteMasked($isQuoteMasked)
{
$this->isQuoteMasked = $isQuoteMasked;
}
protected function isQuoteMasked()
{
return $this->isQuoteMasked;
}
private function getQuoteByCustomer(): ?CartInterface
{
$customerId = $this->_customer
? $this->_customer->getId()
: $this->_customerSession->getCustomerId();
try
{
$quote = $this->quoteRepository->getActiveForCustomer($customerId);
}
catch (NoSuchEntityException $e)
{
$quote = null;
}
return $quote;
}
}
Step 3: Run the command below and check again.
php bin/magento s:d:c
Conclusion
The Infinite Loop Detected issue during checkout in Magento 2 can be frustrating for both merchants and customers, as it disrupts the seamless shopping experience. However, by following the steps outlined in this article, you can effectively resolve this issue and ensure a smooth checkout process for your customers.
