unable to install kanban plugin

[nostrdev-com]

We are trying to install this plugin on a fresh redmine instance: https://www.redmine.org/plugins/redmine_kanban

We unzipped to the plugins folder but get the following when running the rake command:

root@xxx:/app/code# bundle exec rake redmine:plugins NAME=redmine_checklists RAILS_ENV=production
WARN: Unresolved or ambiguous specs during Gem::Specification.reset:
      stringio (>= 0)
      Available/installed versions of this gem:
      - 3.1.2
      - 3.1.1
WARN: Clearing out unresolved specs. Try 'gem cleanup <gem>'
Please report a bug if this causes problems.
rake aborted!
ArgumentError: Missing `secret_key_base` for 'production' environment, set this string with `bin/rails credentials:edit` (ArgumentError)

          raise ArgumentError, "Missing `secret_key_base` for '#{Rails.env}' environment, set this string with `bin/rails credentials:edit`"
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
/run/redmine/vendor/ruby/3.3.0/gems/railties-7.2.2/lib/rails/application/configuration.rb:519:in `secret_key_base='

Any clues? We notice a new major version was installed just 6 days ago (6.0.1)

[nebulon]

Looks like rake needs that variable then exposed for that task. If you run the following prior to the bundle exec... does it help:

export SECRET_KEY_BASE=$(cat /app/data/secrets.yml | grep 'secret_key_base:' | sed -e "s/.*secret_key_base:\s*//")

[nostrdev-com]

That helped!

The error message is now:

root@xxx:/app/code# bundle exec rake redmine:plugins NAME=redmine_checklists RAILS_ENV=production
WARN: Unresolved or ambiguous specs during Gem::Specification.reset:
      stringio (>= 0)
      Available/installed versions of this gem:
      - 3.1.2
      - 3.1.1
WARN: Clearing out unresolved specs. Try 'gem cleanup <gem>'
Please report a bug if this causes problems.
Plugin redmine_checklists was not found.

[nebulon]

I am no redmine plugins expert but maybe those plugins have interdependencies and the kanban plugin needs some checklist plugin installed first?

[nostrdev-com]

Digging deeper I notice that this plugin isn't listed as 6.0.1 compatible

Is there an easy way to downgrade redmine? Or re-install a specific version?

Currently only 20 or so plugins are v6 ready

https://www.redmine.org/plugins?page=2&sort=&utf8=✓&v=6.0

[nebulon]

A downgrade is only possible if you restore to the cloudron app to the previous version. But this will also revert the changes made since then in the data, since the data has to be consistent with the app code version.