일감에서 파일 첨부를 하면 Internal Error가 발생합니다.

redmine - 3.3.0

rake 버젼 문제라 하시는 분도 있어서..

힘들게.

bundle update rake

gem install rake 

이렇게 도 했고요..

Internal error¶

An error occurred on the page you were trying to access.
If you continue to experience problems please contact your Redmine administrator for assistance.

If you are the Redmine administrator, check your log files for details about the error.

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>> production.log 파일을 보면

ActionView::Template::Error (Mysql2::Error: Table 'bitnami_redmine.attachment_previews' doesn't exist: SHOW FULL FIELDS FROM `attachment_previews`):
     7: <% if issue.attachments.any? %>
     8:   <fieldset class="attachments"><legend><%= l(:label_attachment_plural) %></legend>
     9:   <% issue.attachments.each do |attachment| %>
    10:     <%= link_to_attachment attachment, :download => true, :only_path => false %>
    11:     (<%= number_to_human_size(attachment.filesize) %>)<br />
    12:   <% end %>
    13:   </fieldset>
  plugins/redmine_lightbox/lib/redmine_lightbox/patches/attachment_patch.rb:35:in `transformed_preview'
  plugins/redmine_lightbox/app/helpers/redmine_lightbox_helper.rb:41:in `preview_available?'
  plugins/redmine_lightbox/app/helpers/redmine_lightbox_helper.rb:9:in `link_to_attachment_with_preview'
  app/views/mailer/_issue.html.erb:10:in `block in _app_views_mailer__issue_html_erb__1989340128007952879_69892221709980'
  app/views/mailer/_issue.html.erb:9:in `_app_views_mailer__issue_html_erb__1989340128007952879_69892221709980'
  app/views/mailer/issue_add.html.erb:3:in `_app_views_mailer_issue_add_html_erb__470439617696278258_69892221660220'
  app/models/mailer.rb:483:in `block in mail'
  app/models/mailer.rb:481:in `mail'
  app/models/mailer.rb:54:in `issue_add'
  app/models/mailer.rb:494:in `initialize'
  config/initializers/10-patches.rb:163:in `deliver'
  app/models/mailer.rb:64:in `block in deliver_issue_add'
  app/models/issue.rb:985:in `each_notification'
  app/models/mailer.rb:63:in `deliver_issue_add'
  app/models/issue.rb:1684:in `send_notification'
  app/models/issue.rb:210:in `create_or_update'
  app/controllers/issues_controller.rb:140:in `create'
  lib/redmine/sudo_mode.rb:63:in `sudo_mode'

Started GET "/redmine/issues/new" for 175.198.27.129 at 2019-03-30 12:27:56 +0900
Processing by IssuesController#new as HTML
  Current user: admin (id=1)
  Rendered issues/_form_custom_fields.html.erb (2.3ms)
  Rendered issues/_attributes.html.erb (11.8ms)
  Rendered issues/_form.html.erb (19.5ms)
  Rendered attachments/_form.html.erb (1.7ms)
  Rendered issues/new.html.erb within layouts/base (26.4ms)
Completed 200 OK in 100ms (Views: 29.9ms | ActiveRecord: 54.0ms)

이와 같이 발생합니다.

도움 부탁드립니다.