I'm busy with a new installation of 18.04 LTS. There's a problem when I get to the GRUB2 installation part with "req:1 'dhcp4-change' [wlo1]: start running ordered scripts...". It stalls at this point and after a while it throws the error as on the attached screenshot. Please help. I'm a novice when coming to linux so what I see doesn't make sense to me.