Seems to not work with Redmine 5.*

[whotopia]

I tried to install in Redmine 5.0.
bundle install
worked, but when I ran the rake command it failed:

bundle exec rake --trace redmine:plugins:migrate RAILS_ENV=production

** Invoke redmine:plugins:migrate (first_time)
** Invoke environment (first_time)
** Execute environment
rake aborted!
LoadError: cannot load such file -- redmine_more_code
/home/finddx-rm/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/polyglot-0.3.5/lib/polyglot.rb:65:in `require'
/home/finddx-rm/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/polyglot-0.3.5/lib/polyglot.rb:65:in `require'
/home/finddx-rm/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/zeitwerk-2.5.4/lib/zeitwerk/kernel.rb:35:in `require'
/home/finddx-rm/redmine-5.0.0/plugins/redmine_more_code/init.rb:36:in `<top (required)>'
/home/finddx-rm/redmine-5.0.0/lib/redmine/plugin_loader.rb:31:in `load'
/home/finddx-rm/redmine-5.0.0/lib/redmine/plugin_loader.rb:31:in `run_initializer'
/home/finddx-rm/redmine-5.0.0/lib/redmine/plugin_loader.rb:108:in `each'
/home/finddx-rm/redmine-5.0.0/lib/redmine/plugin_loader.rb:108:in `block in load'
........