Hi i am trying to implement the plugin to our redmine website.
Ive succesfully installed the plugin and it shows in the administration tab under plugins.
The issue i am having is the plugin gives me an internal 500 error when clicking on the configure button.
I have looked into the loga and it seems i get a fatal error:
ActionView::Template::error (incompatible visibility for override of method directory)
-
Base: public (in OnlyOffice::Resources::Resource at /var/www/redmine/plugins/onlyoffice_redmine/lib2/onlyoffice/resources/resource.rb:33)
-
Override: private (in #Class:OnlyOffice::Resources::Formats at /var/www/redmine/plugins/onlyoffice_redmine/lib2/onlyoffice/resources/formats.rb:108)
(The override must be at least as permissive as the supermethod)):
Plugin version: 3.0.1 (was originally latest but try again using older version but same issue)
Redmine version: 5.0.7
Ruby version: 3.1.1
Rails version: 6.1.7.6
Redmine theme: purple mine 2
Hey @Cameronbell1337, 
Thanks for the detailed report on the 500 error when configuring the ONLYOFFICE connector (v3.0.1) in Redmine, (Purple Mine theme) — that “incompatible visibility for override of method directory” sounds like a Ruby/Rails visibility mismatch in the plugin code (likely private/public override issue in OnlyOffice::Resources::Formats).
First off, did you try the latest version 3.1.0 of the connector? It includes fixes that might address this. Download it from the Redmine Marketplace or GitHub.
If not, please follow the full installation steps from our guide: ONLYOFFICE & Redmine Integration.
Also, could you confirm:
- Your ONLYOFFICE Document Server version (e.g., v9.0.4)?
- Exact steps you took for installation (e.g., download method, any errors during
bundle install or migration)?
If the error persists after upgrading, share the full stack trace from the logs (beyond the visibility error) — that’ll help pinpoint if it’s theme-related or a dependency conflict.