Nodejs version selection flies (nvm use 15.11.0), how to fix it?

Question

Node.js

There is a problem when restarting the server, I used the first installation instructions from this site . As a result, node.js crashes:

Answer 1

Installing Node.js from the Ubuntu repositories

$ curl -sL https://deb.nodesource.com/setup_15.x | sudo bash -
$ sudo apt install nodejs
$ node -v