Error in installing CE omnibus

Hi all,
I’m trying to install CE Omnibus on a Ubuntu 18.04 using this shell script

curl https://packages.gitlab.com/install/repositories/gitlab/gitlab-ce/script.deb.sh > script.deb.sh

The script terminate with an error on grafana.

What can I do?

Here the log


System Info:
------------
chef_version=14.14.29
platform=ubuntu
platform_version=18.04
ruby=ruby 2.6.5p114 (2019-10-01 revision 67812) [x86_64-linux]
program_name=/opt/gitlab/embedded/bin/chef-client
executable=/opt/gitlab/embedded/bin/chef-client

Running handlers:
There was an error running gitlab-ctl reconfigure:

runit_service[grafana] (monitoring::grafana line 153) had an error: Mixlib::ShellOut::ShellCommandFailed: Expected process to exit with [0], but received ‘1’
---- Begin output of /opt/gitlab/embedded/bin/sv restart /opt/gitlab/service/grafana ----
STDOUT: timeout: run: /opt/gitlab/service/grafana: (pid 14955) 50s, got TERM
STDERR:
---- End output of /opt/gitlab/embedded/bin/sv restart /opt/gitlab/service/grafana ----
Ran /opt/gitlab/embedded/bin/sv restart /opt/gitlab/service/grafana returned 1

Running handlers complete
Chef Client failed. 541 resources updated in 09 minutes 31 seconds
dpkg: error processing package gitlab-ce (–configure):
installed gitlab-ce package post-installation script subprocess returned error exit status 1
Errors were encountered while processing:
gitlab-ce
E: Sub-process /usr/bin/dpkg returned an error code (1)
sysop@hosepladev:~/software$

Did you find a solution? I am having the exact same issue, but strangely it seems to only happen on one out of three servers.