NobbZPlease omit the actual token when copy/pasting, replace it with
exercism configure --token=
drwxrwxr-x 2 rustam rustam 4096 Apr 1 23:18 exercism
sudo snap install exercism
NobbZRunning stuff as root, that is supposed to be run as regular user is never correct
NobbZEspecially when you don't know why stuff isn't working, trying as root again might even harm you more
NobbZ Why this is the case can have many reasons.
Are you using a firewall of some kind? Behind a proxy? VPN? Corporate network?
NobbZWith a lot more changes than only that.