I get this Nginx related error when installing W3 Total Cache Plugin:

FTP credentials don’t allow to write to file /var/www/nginx.conf

W3 Total Cache Error: Files and directories could not be automatically created to complete the installation.

Please execute commands manually

BEGIN W3TC Browser Cache

gzip on; gzip_types text/css text/x-component application/x-javascript application/javascript text/javascript text/x-js text/richtext image/svg+xml text/plain text/xsd text/xsl text/xml image/x-icon;

END W3TC Browser Cache

I don’t mind executing the commands manually but the nginx.conf file is not located where W3TC thinks it should be. The file is located at /etc/nginx/nginx.conf. but when I try to copy and paste it in the directory W3TC wants it to be in, I get errors from filezilla saying “open for write: Permission Denied.” so the file refuses to copy to the directory W3 Total Cache wants to make it work.

Any help is very welcome.