This extension is required to be installed for work of any other Olegnax extension or theme for Magento 2. How to Install Magento 2 Extension Manually and using Composer: https://olegnax.com/documentation/magento-2/how-to-install-magento-2-extension/
To install Magento 2 extensions via Composer you should have SSH access and Composer installed on your server.
- Log in to your server with SSH and navigate to your Magento folder.
- Use following command to get the latest version of extension:
composer require olegnax/module-core
php bin/magento setup:upgrade
php bin/magento setup:di:compile
php bin/magento setup:static-content:deploy
More details: https://olegnax.com/documentation/magento-2/how-to-install-magento-2-extension/
composer update olegnax/module-core
php bin/magento setup:upgrade
php bin/magento setup:di:compile
php bin/magento setup:static-content:deploy