cyberpanel does not install

sh <(curl https://cyberpanel.net/install.sh || wget -O - https://cyberpanel.net/install.sh)

http://prntscr.com/q1e0j0

I get such an error, cyberpanel is not installed. what should i do?
thank you

Please try this and post output

ping cyberpanel.sh
curl -I https://cyberpanel.sh

I did the installation. self-improved. I did not understand, but the installation was. thank you

I did the installation. self-improved. I did not understand, but the installation was. thank you

it could be network fluctuation