GitLab

I have noticed all the emails are failing with the following error:

undefined method `internal_footer' for #<Schleuder::List:0x0000561082264858>
/usr/share/rubygems-integration/all/gems/activemodel-5.2.2.1/lib/active_model/attribute_methods.rb:430:in `method_missing'
/usr/lib/ruby/vendor_ruby/schleuder/mail/message.rb:454:in `add_footer!'
/usr/lib/ruby/vendor_ruby/schleuder/mail/message.rb:127:in `add_internal_footer!'
/usr/lib/ruby/vendor_ruby/schleuder/list.rb:345:in `send_to_subscriptions'
/usr/lib/ruby/vendor_ruby/schleuder/runner.rb:77:in `run'
/usr/lib/ruby/vendor_ruby/schleuder/cli.rb:36:in `work'
/usr/lib/ruby/vendor_ruby/thor/command.rb:27:in `run'
/usr/lib/ruby/vendor_ruby/thor/invocation.rb:126:in `invoke_command'
/usr/lib/ruby/vendor_ruby/thor.rb:369:in `dispatch'
/usr/lib/ruby/vendor_ruby/thor/base.rb:444:in `start'
/usr/bin/schleuder:13:in `<main>'

Here are some information about our ruby and schleuder version.

$ ruby -v
ruby 2.5.5p157 (2019-03-15 revision 67260) [x86_64-linux-gnu]

$ schleuder -v
3.4.0

We have recently switched from the schleuder gem to the Debian package.