Docker ha install error: network is unreachable. why?

Hi! I have installed debian 10 and cinnamon. Installed docker.
And have error at last step of official instruction
(from there:

), when trying to execute this command:

curl -sL "" | bash -s
Error response from daemon: Get dial tcp: lookup on dial udp connect: network is unreachable

can you please advice what to do with an connection error?

curl -Lo