Unable to locate package gitlab-ee how to fix

Trying install Gitlab to Ubuntu 17.10, but receiving message “Unable to locate package gitlab-ee”

how to fix that?

root@fssp:/home# curl https://packages.gitlab.com/install/repositories/gitlab/gitlab-ee/script.deb.sh | sudo bash
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 5933 0 5933 0 0 5933 0 --:–:-- 0:00:01 --:–:-- 3987
Detected operating system as Ubuntu/artful.
Checking for curl…
Detected curl…
Checking for gpg…
Detected gpg…
Running apt-get update… done.
Installing apt-transport-https… done.
Installing /etc/apt/sources.list.d/gitlab_gitlab-ee.list…done.
Importing packagecloud gpg key… done.
Running apt-get update… done.

The repository is setup! You can now install packages.
root@fssp:/home# sudo EXTERNAL_URL=“http://fssp.kz.ccg” apt-get install gitlab-ee
Reading package lists… Done
Building dependency tree
Reading state information… Done
E: Unable to locate package gitlab-ee