sass-mode.el:28:1:Error: Cannot open load file: no such file or directory, haml-mode

[JAVIER HURTADO]

i was installing several packages, and i received an error message, but i am not sure which package generated it.

ProblemType: Package
DistroRelease: Ubuntu 17.04
Package: emacs24 24.5+1-8ubuntu2
ProcVersionSignature: Ubuntu 4.10.0-28.32-generic 4.10.17
Uname: Linux 4.10.0-28-generic x86_64
ApportVersion: 2.20.4-0ubuntu4.4
Architecture: amd64
Date: Tue Jul 18 00:59:39 2017
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2017-07-18 (0 days ago)
InstallationMedia: Ubuntu-GNOME 17.04 "Zesty Zapus" - Release amd64 (20170412)
RelatedPackageVersions:
 dpkg 1.18.10ubuntu2
 apt 1.4
SourcePackage: emacs24
Title: package emacs24 24.5+1-8ubuntu2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)

[Glenn Morris (rgm+lp)]

The actual error is:

  In toplevel form:
  sass-mode.el:28:1:Error: Cannot open load file: no such file or directory, haml-mode
  ERROR: install script from sass-elisp package failed

So this is a bug in sass-elisp.
For more information, see

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=856681