How to Fix Checkout Infinite Loop Detected Issue in Magento 2?

Hello Magento Friends,

In today’s blog, I will give you a solution for How to Fix Checkout Infinite Loop Detected Issue in Magento 2.

In Magento 2 when a customer adds an item to the cart, they are redirected to the checkout page. There they can select their desired payment method and enter the payment details. Once the card details are entered and they click on Place Order, it shows an infinite loop detected error as shown below.

To get rid of this error, let’s look at the solution for Checkout Infinite Loop Detected Issue in Magento 2.

Steps to Fix Checkout Infinite Loop Detected Issue in Magento 2:

Step 1: Create di.xml as given below path

app\code\Vendor\Extension\etc\di.xml

Now, add the below code

<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\Preference\Checkout\Model\Session" />
</config>

Step 2: Create Session.php at given below path

app\code\Vendor\Extension\Preference\Checkout\Model\Session.php

And add the below code

<?php
namespace Vendor\Extension\Preference\Checkout\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
        );
        $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(); 
                        
                        /* Here, $quote->collectTotals(); generates error because of recursive call so, by commenting $quote->collectTotals(); or whole if condition it will not go in infinite and code will work properly. Actually there is no need of $quote->collectTotals(); in this file. */
                    }
                }
                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;
    }
}

Conclusion:

This way you can resolve the Checkout Infinite Loop Detected Issue in Magento 2. If the error still exists, Hire a Dedicated Magento Developer that will help to overcome the infinite loop detected problem at checkout in Magento 2.

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Happy Coding!