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While upgrading Magento version from 2.1.8 to 2.2.3 I have an issue.

The issue arises when I run command setup:upgrade. It will complete half of way Module 'Magento_Quote':

Error converting field value in table quote_item_option where option_id=56822 using Magento\Framework\DB\DataConverter\SerializedToJson. Fix data or replace with a valid value. Failure reason: 'Unable to unserialize value, string is corrupted.'

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1 Answer 1

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Unable to unserialize Issue arises because of Redis Cache

You Need to Run following Command:

Redis-cli > FLUSHALL

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