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I am trying to upgrade OroCommerce 1.3.0 to 1.4.0 using the instructions stated here. I am able to successfully perform all the steps but after that when I try to open the frontend, I get the 500 internal server error.
After debugging the error using dev environment, the main error is:-
Could not convert database value “” to Doctrine Type array
Debug log stacktrace it as a TypeConversion Exception.
Please help me with upgradation process.
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