Hello Magento Friends,

How are you all doing? I am here with this tutorial to solve the issue of unable to serialize value in Magento 2.

While upgrading the Magento 2 version, sometimes you may face the unable to serialize value error on the checkout page.

“report.CRITICAL: Unable to serialize value. Error: Malformed UTF-8 characters, possible incorrectly encoded.“ 

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For now, let’s move on to solve the unable to serialize value error in Magento 2.

How to Solve Unable To Serialize Value Error in Magento 2?

Step 1: Create registration.php at the given below path


Now, add the code as follows

Step 2: Create module.xml at the below path


Then add the code as mentioned below

Step 3: Create di.xml at the following path


Then append the code as given below

Step 4: Now, create Json.php at the path mentioned below


And include the code in it as given below

Step 5: Now, create JsonHexTag.php at the following path


Then write the code as below


This way you can easily get rid of the serialize value error in Magento 2. If you have any doubts about the above steps, contact me via the comment section. Share the solution with your other developer friends to help them get out of the unable to serialize error.

Happy Coding!

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