Using nm-tool in Ubuntu

I am trying to use nm-tool in Ubuntu, but I keep getting errors shown in the screenshot:

nm
jskfanAsked:
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Patrick BogersDatacenter platform engineer LindowsCommented:
Sounds like there is something not right with your NIC, do you have an ip adress and internet access?
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jskfanAuthor Commented:
apparently I can ping Google

nm
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Patrick BogersDatacenter platform engineer LindowsCommented:
Ok, what does:

sudo service network-manager restart

do?
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jskfanAuthor Commented:
Thanks it looks like it is working now after restarting the service:
nm
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jskfanAuthor Commented:
Thank you
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