Mageplaza_Osc - One Step Checkout

Works out of the box (with Luma Theme fallback)

This module requires hyva-themes/magento2-theme-fallback to be installed and configured work.

To do so, run the commands

composer require hyva-themes/magento2-theme-fallback
bin/magento config:set hyva_theme_fallback/general/list_part_of_url onestepcheckout/index

Link to original module

https://www.mageplaza.com/magento-2-one-step-checkout-extension/