icewm help does not work

1) The release of Ubuntu you are using, via 'lsb_release -rd' or System -> About Ubuntu

Description: Ubuntu 14.04.5 LTS
Release: 14.04

2) The version of the package you are using, via 'apt-cache policy pkgname' or by checking in Software Center

  Installed: 1.3.7-5
  Candidate: 1.3.7-5
  Version table:
 *** 1.3.7-5 0
        500 http://archive.ubuntu.com/ubuntu/ trusty/universe amd64 Packages
        100 /var/lib/dpkg/status

3) What you expected to happen

IceWM help

4) What happened instead

Invalid path /usr/share/doc/icewm-common/icewm.html

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: icewm 1.3.7-5
ProcVersionSignature: Microsoft 4.4.0-43-Microsoft 4.4.35
Uname: Linux 4.4.0-43-Microsoft x86_64
ApportVersion: 2.14.1-0ubuntu3.27
Architecture: amd64
Date: Tue Dec 5 03:14:46 2017
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=pl_PL.UTF-8
 SHELL=/bin/bash
SourcePackage: icewm
UpgradeStatus: No upgrade log present (probably fresh install)