Error happing near end of Ubuntu build that has to do with a bad url being targeted

[John Lewis <oflameo2@gmail.com>]

Error happing near end of Ubuntu build that has to do with a bad url
being targeted. What is the work around?

[2016-08-08 08:00:49] lb chroot_hostname install
P: Configuring file /etc/hostname
P: Configuring file /bin/hostname
[2016-08-08 08:00:49] lb chroot_apt install
P: Configuring file /etc/apt/apt.conf
[2016-08-08 08:00:50] lb chroot_archives chroot install
P: Configuring file /etc/apt/sources.list
Hit:1 http://mirror.us.leaseweb.net/ubuntu xenial InRelease
Reading package lists... Done
Reading package lists... Done
Building dependency tree... Done
ubuntu-keyring is already the newest version (2012.05.19).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Hit:1 http://mirror.us.leaseweb.net/ubuntu xenial InRelease
Reading package lists... Done
Reading package lists... Done
Building dependency tree... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Reading package lists... Done
Building dependency tree... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Reading package lists... Done
Building dependency tree... Done
[2016-08-08 08:00:50] lb chroot_linux-image
[2016-08-08 08:00:50] lb chroot_firmware
--2016-08-08 08:00:50-- 
http://mirror.us.leaseweb.net/ubuntu//dists/xenial/main/Contents-amd64.gz
Resolving mirror.us.leaseweb.net (mirror.us.leaseweb.net)...
108.59.10.97, 2604:9a00:2010:a001:1:face:bad:c0de
Connecting to mirror.us.leaseweb.net
(mirror.us.leaseweb.net)|108.59.10.97|:80... connected.
HTTP request sent, awaiting response... 404 Not Found
2016-08-08 08:00:50 ERROR 404: Not Found.


gzip: stdin: unexpected end of file
P: Begin unmounting filesystems...
P: Saving caches...
Reading package lists... Done
Building dependency tree... Done