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I want to upgrade Magento from Magento 2.2.8 to Magento 2.3.3, I have updated Magento's composer.json using following command :

composer require magento/product-community-edition 2.3.3 --no-update

Composer json updated successfully, but when I tried to update composer json using composer update command then it's return following error.

Problem 1
        - magento/product-community-edition 2.3.3 requires zendframework/zend-stdlib ^3.2.1 -> satisfiable by zendframework/zend-stdlib[3.2.1].
        - magento/product-community-edition 2.3.3 requires zendframework/zend-stdlib ^3.2.1 -> satisfiable by zendframework/zend-stdlib[3.2.1].
        - Conclusion: don't install zendframework/zend-stdlib 3.2.1
        - Installation request for magento/product-community-edition 2.3.3 -> satisfiable by magento/product-community-edition[2.3.3].

What I need to do for solve this error?

Thanks in advance.

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1 Answer 1

Reset to default
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Please use this command first and after that run Magento upgrade command.

composer require zendframework/zend-stdlib
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