==== Required information ====
- iRedMail version (check /etc/iredmail-release):
- Linux/BSD distribution name and version: Centos 7
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Web server (Apache or Nginx): Nginx
- Manage mail accounts with iRedAdmin-Pro? Pro
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

I have followed the steps to install Netdata. However, I'm getting a 404 Not Found when I try to access https://my-server/netdata/

From logs netdat error.log I see this:

2018-04-04 10:53:34: apps.plugin ERROR : MAIN : Cannot process /proc/14195/io (command 'postqueue') (errno 13, Permission denied)                                               │
2018-04-04 10:59:28: apps.plugin ERROR : MAIN : Cannot process /proc/14455/io (command 'postqueue') (errno 13, Permission denied)

Nginx error.log

[error] 13853#0: *1 "/var/www/html/netdata/index.php" is not found (2: No such file or directory), client: 62..xxx.xxx, server: _, request: "GET /netdata (2: No such file or directory)