FTL fails to download

[MrGoatastic]

@Joel
Did you try that? its fixed my installation and now its running without trouble !!! since you have same issues.
thanks to @Bucking_Horn

@Bucking_Horn

As another attempt ot preserve a public DNS server during installation, you could try altering resolvconf 's default settings:

 sudo nano /etc/resolvconf/resolv.conf.d/head

# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
#     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 8.8.8.8

Exit with saving, then restart resolvconf :

sudo systemctl restart resolvconf.service

Check contents of resolv.conf to verify this worked:

cat /etc/resolv.conf

To be sure, reboot your Pi-hole machine and double check.
If your public DNS server is still present in resolv.conf , you’re ready to retry Pi-hole’s installation script again.

EDIT:
Don’t forget to remove your public DNS server from /etc/resolvconf/resolv.conf.d/head once you’re done.