After upgrading Magento 2.1.9 to 2.2.4. and Run command php bin/magento setup:upgrade getting this error.

" Error converting field additional_data in table catalog_eav_attribute where attribute_id=114 using Magento\Framework\DB\DataConverter\SerializedToJson. Fix data or replace with a valid value. "

Any Suggestion ?

1 Answer 1


I found the solution: need to open the table in the DB and find the additional_data and make the empty places NULL.

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