Installation fails -- error while trying to load the gem 'kubeclient'

I am trying to install gitlab on Debian 10 from package. I have done it several times before, but now it fails.

Generated at 2021-09-24 07:36:17 +0200
Mixlib::ShellOut::ShellCommandFailed: rails_migration[gitlab-rails] (gitlab::database_migrations line 51) had an error: Mixlib::ShellOut::ShellCommandFailed: bash
[migrate gitlab-rails database] (/opt/gitlab/embedded/cookbooks/cache/cookbooks/gitlab/resources/rails_migration.rb line 16) had an error: Mixlib::ShellOut::Shell
CommandFailed: Expected process to exit with [0], but received '1'
---- Begin output of "bash"  "/tmp/chef-script20210924-55362-145rymm" ----
STDOUT: rake aborted!
Bundler::GemRequireError: There was an error while trying to load the gem 'kubeclient'.
Gem Load Error is:

I have checked: kubeclient gem is in its place. Is there any non-documented dependencies, or requirements? I mean e.g. ports have to be open, or like this?

Thanks in advance.