How to upgrade Magento 2.2.8 to 2.3.2?

Question

I am upgrading magento 2.2.8 store to 2.3.2. I have change version in composer.json "magento/product-community-edition": "2.3.2", and run command composer update then get error

Problem 1 - Installation request for magento/product-community-edition 2.3.2 -> satisfiable by magento/product-community-edition[2.3.2]. - magento/product-community-edition 2.3.2 requires dotmailer/dotmailer-magento2-extension 3.1.2 -> satisfiable by dotmailer/dotmailer-magento2-extension[3.1.2] but these conflict with your requirements or minimum-stability.

How can getout from this error? Thanks

Answer 1

you need to use magento script to upgrade from 2.2 to 2.3.3 https://raw.githubusercontent.com/magento/magento2/2.3/dev/tools/UpgradeScripts/pre_composer_update_2.3.php

or at least you have to run:

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

Answer 2

Try this

     composer require magento/product-community-edition=2.3.2 --no-update

     composer update dotmailer/dotmailer-magento2-extension --ignore-platform-reqs