Unable to install GRUB in default

When the installation is at the step of installing GRUB, there is this error:


Expected outcome:

I don’t know how to repair.

This is the iso of Ubuntu 18.04.2

Foreman and Proxy versions:

Foreman 1.16.2

I try to create new host from Vmware, I have problems only with Ubuntu

Hello, you need to dig deeper and find out the error. Also pastebin installer preseed template (mind the password).

here is pastebin : https://pastebin.com/be1yVET5

When I create a new host with Ubuntu 17.10 I haven’t got problem, only with 18.04

it works, In the parameters of the OS, I remove minor version, there are only Major version and the name of the release.

But when I use Cosmic in release name in order to use 18.04 LTS, at the start of installation an error appear about kernel modules.

Do you say it works or it does not? I don’t see anything suspicious.