Redmine

I am using the official redmine 5.0.5 docker container from dockerhub. Plugins being used: Redmine Agile Pro 1.6.5 and DMSF 3.0.12

Steps to reproduce:
Inside the container, those extra commands are ran:
apt update && apt install build-essential -y && gem install ox rails-controller-testing && bundle install && rake redmine:plugins:migrate

As the container is now configured upon restarting it I get the following error in logs:
Psych::DisallowedClass (Tried to load unspecified class: Set)

Afterwards I modify config/application.rb ( (like shown below)

config.active_record.yaml_column_permitted_classes = [
Set,
Date,
Time,
Symbol,
ActiveSupport::HashWithIndifferentAccess,
ActionController::Parameters
]

Adding the “Set” class, gets me to a point I get different error:

ActionView::Template::Error (Tried to load unspecified class: Set):
10: <div id="my-page" class="splitcontent">
11: <% @groups.each do |group| %>
12: <div id="list-<%= group %>" class="block-receiver splitcontent<%= group %>">
13: <%= render_blocks(@blocks[group], @user) %>
14: </div>
15: <% end %>
16: </div>

Is there anything I can do to fix the issue? I got to work version 5.0.2 with aforementioned plugins.
The version 5.0.5 simply does not work for me in my scenario.

Thanks in advance,

David