I can't install Docker because containerd.io has no installation candidate

Question

I tried to install Docker on Kubuntu 19.10.

I used these steps to install: https://docs.docker.com/install/linux/docker-ce/ubuntu/

During step 2, after added r

Answer 1

If the from @vavalm did not work either, check that you have installed ubuntu amd64. There is a chance that you have installed the Ubuntu version i384 instead