Error during unserialization

[bcphang]

There are many exceptions happened with the following stack trace:

Error during unserialization

• Exception.Exception (C:\site\lib\Unserialize\Parser.php:60)
• Unserialize_Parser.unserialize (C:\site\app\code\core\Mage\Core\Helper\UnserializeArray.php:44)
• Mage_Core_Helper_UnserializeArray.unserialize (C:\site\app\code\core\Mage\Sales\Model\Quote\Address.php:1094)
• Mage_Sales_Model_Quote_Address.getAppliedTaxes (C:\site\app\code\core\Mage\Tax\Model\Sales\Total\Quote\Tax.php:1477)
• Mage_Tax_Model_Sales_Total_Quote_Tax.fetch (C:\site\app\code\core\Mage\Sales\Model\Quote\Address.php:1027)

Can I understand what is the error about and how to fix?

I am using Magento CE 1.9.3.3 with PHP 5.6 hosting on Windows IIS.

[Manthan Dave]

Hi @bcphang

Seems like this is known bug and it is already fixed in SUPEE-8788 patch.

To resolve the issue , kindly install this patch in your magento version and that will solve the error.

Here is the reference link for how to install/apply patch on the existing magento application - https://devdocs.magento.com/guides/m1x/other/ht_install-patches.html

[bcphang]

Hi @Manthan Dave,

The Magento version is CE 1.9.3.3

It should already have the SUPEE-8788 applied in the version itself.

So I guess it should be a different issue?