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I'm trying to install the easy_gantt plugin with this commands:

 1) $ bundle install
 2) $ bundle exec rake db:migrate RAILS_ENV=production
 3) $ bundle exec rake redmine:plugins:migrate RAILS_ENV=production

but, after the command number 2, i'm getting this error:

rake aborted!
NoMethodError: private method `prepend' called for #<Class:0x007f56e0e4c440>
/opt/bitnami/apps/redmine/htdocs/config/environment.rb:14:in `<top (required)>'
Tasks: TOP => db:migrate => environment
(See full trace by running task with --trace)

This the informations about my redmine version (installed through bitnami):

Environment:
  Redmine version                3.2.0.stable
  Ruby version                   2.0.0-p647 (2015-08-18) [x86_64-linux]
  Rails version                  4.2.5
  Environment                    production
  Database adapter               Mysql2
SCM:
  Subversion                     1.8.13
  Cvs                            1.12.13
  Git                            2.6.1
  Filesystem                     
Redmine plugins:
  redmine_wktime                 2.1.2

How can i solve this problem? I really need to use this plugin...

Thank you a lot for your support.

Regards, Salvatore La Rocca

Salvatore La Rocca
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1 Answers1

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i had the same issue, but upgrading to Ruby 2.3.0 fixed the problem for me.

Hope it helps

marco pietri
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  • Thanks for the support but, after the upgrading process (to Ruby 2.3.0) Redmine use always the older version 2.0.0-p647. How can i change the version of ruby used by Redmine? Thank you a lot for you time! – Salvatore La Rocca Aug 01 '16 at 12:40