error on bitnami redmine 4.1.0

[duc-it]

when i copy redmine preview office and restart redmine, error content production.log: Creating scope :system. Overwriting existing method Enumeration.system. Creating scope :system. Overwriting existing method Enumeration.system. Creating scope :sorted. Overwriting existing method Group.sorted. Creating scope :sorted. Overwriting existing method User.sorted. Creating scope :system. Overwriting existing method Enumeration.system. Creating scope :sorted. Overwriting existing method Group.sorted. Creating scope :sorted. Overwriting existing method User.sorted.

and when i use command:

bundle exec rake redmine:plugins NAME=redmineup_cms RAILS_ENV=production

^[[Arake aborted! NoMethodError: undefined method alias_method_chain' for AttachmentsController:Class Did you mean? alias_method /opt/redmine-4.1.0-0/apps/redmine/htdocs/plugins/redmine_preview_office/lib/redmine_preview_office/patches/attachments_controller_patch.rb:32:in block in included' /opt/redmine-4.1.0-0/apps/redmine/htdocs/plugins/redmine_preview_office/lib/redmine_preview_office/patches/attachments_controller_patch.rb:29:in class_eval' /opt/redmine-4.1.0-0/apps/redmine/htdocs/plugins/redmine_preview_office/lib/redmine_preview_office/patches/attachments_controller_patch.rb:29:in included' /opt/redmine-4.1.0-0/apps/redmine/htdocs/plugins/redmine_preview_office/lib/redmine_preview_office/patches/attachments_controller_patch.rb:88:in include' /opt/redmine-4.1.0-0/apps/redmine/htdocs/plugins/redmine_preview_office/lib/redmine_preview_office/patches/attachments_controller_patch.rb:88:in <top (required)>'

Please help me! Thanks.