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After upgrade Magento 2.2.5 to Magento 2.3.1, Magento admin panel still display the old version that is 2.2.5
Updgration done successfully but admin does not display new version.
Updgration done successfully
Check your composer.json file in the magento root, for some reason magento admin gets the version that is shown in the footer from the composer.json
Required, but never shown