Here, I want to overwrite below csv file using the custom theme
(without creating separate modules)
It's should not take data from core CSV file.
vendor/amzn/amazon-pay-and-login-magento-2-module/src/Core/i18n/en_US.csv
Core Translations
"Back","Back to register or connect an account"
Need To Overwrite
"Back", "Back"
Try to using cweagans/composer-patches to patch composer module
Referrer link here
The extension was upgraded also removed references to 'Back', try to upgrade to latest version
This is default magento issue, For temporary, we change "Back","Back to register or connect an account" To "Back","Back" in below file then it will work
vendor/amzn/amazon-pay-and-login-magento-2-module/src/Core/i18n/en_GB.csv:79 vendor/amzn/amazon-pay-and-login-magento-2-module/src/Core/i18n/en_US.csv:79
Then run below command.
php bin/magento setup:static-content:deploy
For more information github.com/magento/magento2/issues
