Hello @stemy2,
Sorry for the delay, but I am at vacation, let me try to help you.
It looks like that Netdata is running, but the sockets opened somehow cannot be closed and it is not possible to open another connection. When you run the following commands:
$ sudo systemctl stop netdata
$ ps aux| grep netdata
after the second command, can you see a netdata process running? If there are, we are not able to stop completely Netdata, please, run the next command:
$ sudo killall netdata
$ ps aux| grep netdata
It is expected that after the next command sequence, Netdata won’t be running, after this, try to start Netdata again:
$ sudo systemctl start netdata
Please, let us know if this helped you.
I am in vacation next few days, but I will try to answer you. I am really sorry for this delay to answer you!
Best regards!