Upgrade Magento 2.1.* or 2.2.* Version to Latest 2.3.4 Version for site speed and security improvement, You need to follow all the steps given in the articles.
Magento 2.3 Upgrade is a little bit tricky. You can’t just upgrade using only changes in magento/product-community-edition and version line from the composer.json file.
Upgrade using the command line Magento 2.3,
Hey,
I noticed when you said “composer require –dev phpunit/phpunit:~6.2.0 friendsofphp/php-cs-fixer:~2.10.1 lusitanian/oauth:~0.8.10 pdepend/pdepend:2.5.2 sebastian/phpcpd:~3.0.0 squizlabs/php_codesniffer:3.2.2 –no-update” you made the mistake of only using one -. If you use a whole word you need to use 2 –.
But great article though!!
I got below error When upgrading magento 2.2.3 to magento 2.3
[UnexpectedValueException]
The checksum verification of the file failed (downloaded from https://repo.magento.com/archives/vertex/module-tax/vertex-module-tax-3.0.0.0.zip)
I got below error When upgrading magento 2.2.3 to magento 2.3
[UnexpectedValueException]
The checksum verification of the file failed (downloaded from https://repo.magento.com/archives/vertex/module-tax/vertex-module-tax-3.0.0.0.zip)
Hey,
I noticed when you said “composer require –dev phpunit/phpunit:~6.2.0 friendsofphp/php-cs-fixer:~2.10.1 lusitanian/oauth:~0.8.10 pdepend/pdepend:2.5.2 sebastian/phpcpd:~3.0.0 squizlabs/php_codesniffer:3.2.2 –no-update” you made the mistake of only using one -. If you use a whole word you need to use 2 –.
But great article though!!
got and error when run the 2.second command
“[InvalidArgumentException]
Could not find package –dev. “
After upgrade Magento version 2.2.7 to 2.3.3. Checkout page is display below error message.
1 exception(s):Exception #0 (InvalidArgumentException): Unable to serialize value.
Exception #0 (InvalidArgumentException): Unable to serialize value.
#1 MagentoCheckoutBlockOnepage->getSerializedCheckoutConfig() called at [vendor/magento/module-checkout/view/frontend/templates/onepage.phtml:26] #2 include('/var/www/html/te...') called at [vendor/magento/framework/View/TemplateEngine/Php.php:59]