We have a Linux CentOS 7 server with PHP 7.0.9 and NGINX 1.11.3 installed. We have completed the command line installation of Magento 2.1.0. The front end loads up just fine in the browser but when I try to go to the admin back end, I am getting a 404 error page. I have been scouring the internet for a solution and none of the solutions I have found have fixed my issue. Please help!