Manager cannot be started

Hello,
I was using Manageresktop edition before, now i wanted to switch to server edition so i uninstalled desktop edition from my system and deleted all the files. But then i am gettting this error “Manager cannot be started bcz it is already running”, kindly help me in this regard.

root@orangepipc:~# mono /usr/share/manager-server/ManagerServer.exe
Manager Server [Version 16.8.13]
Copyright © 2016 NGSoftware. All rights reserved.

Syntax:

mono ManagerServer.exe [options]

Options:

-port [number]     Set port on which HTTP server should listen on.
-path [directory]  Set directory where Manager should look for data.

Examples:

mono ManagerServer.exe
mono ManagerServer.exe -port 80
mono ManagerServer.exe -port 80 -path "/root/.local/share/Manager"

[12:38:30 PM] Manager cannot start because it is already running.

Press any key to exit…

Same issue here, happened after the installation falied with an unknown error

edit* just solved my problem by uninstalling mcafee security scanner, and other posts say lavasoft adaware interferes too, try uninstalling stuff like that you don’t need