[Koha] Can't run auth_show_hidden_data.pl script

[Mark Alexander]

Excerpts from Prof. Lisandro Laura's message of 2017-12-06 11:41:57 -0300:
> perl ./usr/share/koha/bin/maintenance/auth_show_hidden_data.pl
> 
> But I get the following error:
> 
> "Can't locate Koha/Authorities.pm in @INC (you may need to install the
> Koha::Authorities module) (@INC contains: /etc/perl

This sounds familiar.  Try running the following command first:

  koha-shell LIBRARY

where LIBRARY is your Koha instance name.  After that, the various
Koha shell scripts should work.