Before I can even begin the install process, it proclaims:
The directory /var/www/(domain.tld)/internal_data must be writable. Please change the permissions on this directory to be world writable (chmod 0777). If the directory does not exist, please create it.
Both the data and internal_data directories exist, at chown'd to 0777 AND are owned by the user that nginx and php-fpm run as.
This seems pretty broken. How can I either bypass this check or get 1.3.6 to recognize that these directories are, in fact, writable?