equivs-build --full ... no upstream tarball found

daniel@Kubuntu-VirtualBox:~$ equivs-build --full rivendell-standard-meta
dpkg-buildpackage: info: source package rivendell-standard-meta
dpkg-buildpackage: info: source version 1.0
dpkg-buildpackage: info: source distribution unstable
dpkg-buildpackage: info: source changed by Daniel Bair <email address hidden>
dpkg-buildpackage: info: host architecture amd64
 dpkg-source --before-build equivs.iqHnr8
 fakeroot debian/rules clean
dh_testdir
dh_clean
 dpkg-source -b equivs.iqHnr8
dpkg-source: error: can't build with source format '3.0 (quilt)': no upstream tarball found at ../rivendell-standard-meta_1.0.orig.tar.{bz2,gz,lzma,xz}
dpkg-buildpackage: error: dpkg-source -b equivs.iqHnr8 subprocess returned exit status 255
Error in the build process: exit status 255

Description: Ubuntu 18.04 LTS
Release: 18.04

equivs:
  Installed: 2.1.0
  Candidate: 2.1.0
  Version table:
 *** 2.1.0 500
        500 http://th.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
        500 http://th.archive.ubuntu.com/ubuntu bionic/universe i386 Packages
        100 /var/lib/dpkg/status

The instructions says that it will create a source file, but it does not.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: equivs 2.1.0
ProcVersionSignature: Ubuntu 4.15.0-15.16-generic 4.15.15
Uname: Linux 4.15.0-15-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
CurrentDesktop: KDE
Date: Mon Apr 30 06:58:06 2018
InstallationDate: Installed on 2018-04-13 (16 days ago)
InstallationMedia: Kubuntu 18.04 LTS "Bionic Beaver" - Beta amd64 (20180404)
PackageArchitecture: all
SourcePackage: equivs
UpgradeStatus: No upgrade log present (probably fresh install)