I no longer have a node running, nor do i have an ubuntu machine to test things out... But looking at your output, there are a couple of things i see:
I see a lot of deprecation warnings. The developer of nomp should probably update his dependency list. I also see a timeout when a git fetch is executed. Was your network ok?
All in all, i guess you'll have to double check your network, and if it works fine open an issue on the nomp git repository.
When this guide was written 2,5 years ago, this walktrough worked fine... But in tech 2,5 years is forever... Things change really fast...
Thanks for your response, indeed, I had nomp working fine in the past (3 years ago) now the the packages are outdated, if you look at their repositories, you will notice nothing was updated for 6/8/10 years, I don't see a recent update, I don't know I can get any help from the maintainers.
By the way, the network is fine, I tried this several times, on several machines, VMs etc.. nothing works, all the issues are coming from Node.