i need help

[myers]

after changing the IP address of the server I can not go into cacti system ubuntu 16.04 desktop amd64. strongly do not scold me writing with an interpreter

[netniV]

If you changed the IP of the server, make sure that Apache is configured to listen on that IP. For example, if you configured it to only listen on 1.2.3.4 and you've now called it 4.3.2.1, apache won't find the IP to bind. Additionally, you may find depend on which OS you are on, that the firewall is getting in the way.