cannot install xemacs21-nomule

[James Hirschorn]

Compiling /usr/share/xemacs21/site-lisp/namazu/gnus-nmz-1.el...
While compiling toplevel forms in file /usr/share/xemacs21/site-lisp/namazu/gnus-nmz-1.el:
  !! Invalid read syntax (("#"))
>>Error occurred processing gnus-nmz-1.el:
Invalid read syntax: "#"

Compiling /usr/share/xemacs21/site-lisp/namazu/namazu.el...
While compiling toplevel forms in file /usr/share/xemacs21/site-lisp/namazu/namazu.el:
  !! Invalid read syntax (("#"))
>>Error occurred processing namazu.el:
Invalid read syntax: "#"

Done
ERROR: install script from namazu2 package failed
dpkg: error processing package xemacs21-nomule (--configure):
 installed xemacs21-nomule package post-installation script subprocess returned error exit status 1

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: xemacs21-nomule 21.4.24-5ubuntu1
ProcVersionSignature: Ubuntu 4.15.0-36.39-generic 4.15.18
Uname: Linux 4.15.0-36-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Thu Nov 29 18:52:18 2018
EcryptfsInUse: Yes
SourcePackage: xemacs21
UpgradeStatus: Upgraded to bionic on 2018-09-03 (87 days ago)