[Closed] WPML String Translation is attempting to write .mo files with translations to folder

I am again getting this warning in wordpress :
WPML String Translation is attempting to write .mo files with translations to folder:
/var/www/csi/html/wp-content/languages
This folder appears to be not writable. This is blocking translation for strings from appearing on the site.
To resolve this, please contact your hosting company and request that they make that folder writable.

I already have permission of 777.