When I run php bin/magento setup:static-content:deploy
Only en_US folder is created in below folder
/var/www/html/pub/static/frontend/Magento/blank/
fr_FR folder is not created until I run php bin/magento setup:static-content:deploy fr_FR
can someone tell me why this happens?
There seems a Magento bug raised for this and the fix will be available in 2.2. Please read this discussion for more information
https://github.com/magento/magento2/issues/4229