No install after wget -qO ee && sudo bash ee

Just deployed a Vultr Debian server. after running wget -qO ee && sudo bash ee, nothing happened. Please advise.

First of all, if you want to install the 4th version of EE, you should use the " wget -qO ee && sudo bash ee " command.
I never had this kind of problem, but before installing EE I always use an update command: " apt-get update -y && apt-get upgrade -y && apt-get dist-upgrade -y ". It works fine for me(I’m using Ubuntu 18.4).
Maybe It could work for you as well.