I have read other posts, most of them were not solved, and I also tried the "solutions" posted there.
I wasn't successful getting a download link by the terminal
apt-get install --print-uris build-essential
I wasn't successful with
sudo apt-get install build-essential neither.
I have found an .RPM version of build-essential here. though the steps are not working for me.
2ND question. ----I even tried https://community.linuxmint.com/software/view/build-essential to download directly by AptURL but when I open it, it says "Package build-essential is virtual" What does that mean? Or should I say, how would I resolve it?