unable to serialize value

Magento 2.3.XX unable to serialize value and Failed to load the components errors on checkout

CRITICAL Error: Unable to serialize value When I upgraded the Magento on the checkout page and that was “report.CRITICAL: Unable to serialize value. Error: Malformed UTF-8 characters, possible incorrectly encoded.” Please follow below step: 1)  Create registration.php file at Path :- app/code/Dolphin/Serializer

2) Create module.xml file at  Path :- app/code/Dolphin/Serializer/etc

3) Create di.xml…