我正在学习redmine。我正在尝试添加RedmineReminderEmail功能。我正在关注doc，它在我的案例中没有用。
以下是执行给定命令
时出错的错误$ bundle exec rake redmine:send_reminders RAILS_ENV="production"
rake aborted!
ActiveRecord::RecordNotFound: Couldn't find Tracker with 'id'=0
/var/lib/gems/2.3.0/gems/activerecord-4.2.8/lib/active_record/core.rb:155:in `find'
/home/rishikant/redmine/app/models/mailer.rb:382:in `reminders'
/home/rishikant/redmine/lib/tasks/reminder.rake:42:in `block (3 levels) in <top (required)>'
/home/rishikant/redmine/app/models/mailer.rb:433:in `with_synched_deliveries'
/home/rishikant/redmine/lib/tasks/reminder.rake:41:in `block (2 levels) in <top (required)>'
/var/lib/gems/2.3.0/gems/rake-12.3.0/exe/rake:27:in `<top (required)>'
Tasks: TOP => redmine:send_reminders
(See full trace by running task with --trace)
我不明白为什么会这样。请提出宝贵的建议来解决这个问题。任何帮助，将不胜感激。感谢。