Can't install v5.2

[Veet]

I had the same problem with LL5.2. Grub installation failed "the grub-efi-amd64-signed package failed to install into /target/. With out the grub boot loader The installed system will not boot".Connecting to the internet while installing solved the problem. I've been using Linux Lite since series 1 and never needed to be connected to the internet before to install the os. Sometimes I install an os where there is no internet access , then later when I have a connection I'll do the updates. Does anyone know what has changed?