Mastodon: Error when running development environment: uninitialized constant ActiveRecordQueryTrace (NameError)

[zorun]

I'm trying to run mastodon in development mode, following Running-Mastodon/Development-guide.md.

But I'm hitting the same error as #749 and #1963 (see full error log below). The difference is that they ran the development environment accidentally, while I do actually want to run the development environment.

Regarding installation, this is Debian stretch with ruby 2.3.3 from the Debian packages, using mastodon v1.2.2. I basically cloned the VM I am running for a production instance, so it is running fine in production.

$ RAILS_ENV=development bundle exec rails db:setup
Database 'mastodon_development' already exists
Database 'mastodon_test' already exists
**************************************************
⛔️ WARNING: Sidekiq testing API enabled, but this is not the test environment.  Your jobs will not go to Redis.
**************************************************
rails aborted!
NameError: uninitialized constant ActiveRecordQueryTrace
/home/mastodon/live/config/environments/development.rb:85:in `<top (required)>'
/home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/engine.rb:600:in `block (2 levels) in <class:Engine>'
/home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/engine.rb:599:in `each'
/home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/engine.rb:599:in `block in <class:Engine>'
/home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/initializable.rb:30:in `instance_exec'
/home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/initializable.rb:30:in `run'
/home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/initializable.rb:55:in `block in run_initializers'
/home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/initializable.rb:44:in `each'
/home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/initializable.rb:44:in `tsort_each_child'
/home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/initializable.rb:54:in `run_initializers'
/home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/application.rb:352:in `initialize!'
/home/mastodon/live/config/environment.rb:5:in `<top (required)>'
/home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/application.rb:328:in `require_environment!'
/home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/application.rb:448:in `block in run_tasks_blocks'
/home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/commands/rake_proxy.rb:14:in `block in run_rake_task'
/home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/commands/rake_proxy.rb:11:in `run_rake_task'
/home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/commands/commands_tasks.rb:51:in `run_command!'
/home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/commands.rb:18:in `<top (required)>'
bin/rails:4:in `require'
bin/rails:4:in `<main>'
Tasks: TOP => db:setup => db:schema:load_if_ruby => environment
(See full trace by running task with --trace)

Here is the error log when running rails:

$ bundle exec rails server
=> Booting Puma
=> Rails 5.0.2 application starting in development on http://localhost:3000
=> Run `rails server -h` for more startup options
**************************************************
⛔️ WARNING: Sidekiq testing API enabled, but this is not the test environment.  Your jobs will not go to Redis.
**************************************************
Exiting
/home/mastodon/live/config/environments/development.rb:85:in `<top (required)>': uninitialized constant ActiveRecordQueryTrace (NameError)
    from /home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/engine.rb:600:in `block (2 levels) in <class:Engine>'
    from /home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/engine.rb:599:in `each'
    from /home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/engine.rb:599:in `block in <class:Engine>'
    from /home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/initializable.rb:30:in `instance_exec'
    from /home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/initializable.rb:30:in `run'
    from /home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/initializable.rb:55:in `block in run_initializers'
    from /usr/lib/ruby/2.3.0/tsort.rb:228:in `block in tsort_each'
    from /usr/lib/ruby/2.3.0/tsort.rb:350:in `block (2 levels) in each_strongly_connected_component'
    from /usr/lib/ruby/2.3.0/tsort.rb:422:in `block (2 levels) in each_strongly_connected_component_from'
    from /usr/lib/ruby/2.3.0/tsort.rb:431:in `each_strongly_connected_component_from'
    from /usr/lib/ruby/2.3.0/tsort.rb:421:in `block in each_strongly_connected_component_from'
    from /home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/initializable.rb:44:in `each'
    from /home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/initializable.rb:44:in `tsort_each_child'
    from /usr/lib/ruby/2.3.0/tsort.rb:415:in `call'
    from /usr/lib/ruby/2.3.0/tsort.rb:415:in `each_strongly_connected_component_from'
    from /usr/lib/ruby/2.3.0/tsort.rb:349:in `block in each_strongly_connected_component'
    from /usr/lib/ruby/2.3.0/tsort.rb:347:in `each'
    from /usr/lib/ruby/2.3.0/tsort.rb:347:in `call'
    from /usr/lib/ruby/2.3.0/tsort.rb:347:in `each_strongly_connected_component'
    from /usr/lib/ruby/2.3.0/tsort.rb:226:in `tsort_each'
    from /usr/lib/ruby/2.3.0/tsort.rb:205:in `tsort_each'
    from /home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/initializable.rb:54:in `run_initializers'
    from /home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/application.rb:352:in `initialize!'
    from /home/mastodon/live/config/environment.rb:5:in `<top (required)>'
    from /home/mastodon/live/config.ru:4:in `block in <main>'
    from /home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/rack-2.0.1/lib/rack/builder.rb:55:in `instance_eval'
    from /home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/rack-2.0.1/lib/rack/builder.rb:55:in `initialize'
    from /home/mastodon/live/config.ru:in `new'
    from /home/mastodon/live/config.ru:in `<main>'
    from /home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/rack-2.0.1/lib/rack/builder.rb:49:in `eval'
    from /home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/rack-2.0.1/lib/rack/builder.rb:49:in `new_from_string'
    from /home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/rack-2.0.1/lib/rack/builder.rb:40:in `parse_file'
    from /home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/rack-2.0.1/lib/rack/server.rb:318:in `build_app_and_options_from_config'
    from /home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/rack-2.0.1/lib/rack/server.rb:218:in `app'
    from /home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/commands/server.rb:59:in `app'
    from /home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/rack-2.0.1/lib/rack/server.rb:353:in `wrapped_app'
    from /home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/commands/server.rb:124:in `log_to_stdout'
    from /home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/commands/server.rb:77:in `start'
    from /home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/commands/commands_tasks.rb:90:in `block in server'
    from /home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/commands/commands_tasks.rb:85:in `tap'
    from /home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/commands/commands_tasks.rb:85:in `server'
    from /home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/commands/commands_tasks.rb:49:in `run_command!'
    from /home/mastodon/live/vendor/bundle/ruby/2.3.0/gems/railties-5.0.2/lib/rails/commands.rb:18:in `<top (required)>'
    from bin/rails:4:in `require'
    from bin/rails:4:in `<main>'

---

• [X] I searched or browsed the repo’s other issues to ensure this is not a duplicate.
• [X] This bug happens on a tagged release and not on master (If you're a user, don't worry about this).

[zorun]

Solved by installing the development dependencies:

bundle install --deployment --with development

Bundle is not intuitive, I thought that by simply omitting --without development it would install development gems, but apparently not.

I'm leaving this ticket open until the doc is fixed (by me or somebody else).

[ashfurrow]

I'm glad you got it figured out! Yeah, Bundler can be a bit unintuitive for sure. A pull request to the docs repo would be welcome :bow:

[zorun]

Fixed by https://github.com/tootsuite/documentation/issues/133

[cooox]

FYI, the merge of PR tootsuite/documentation#244 removed the introduced flag, but it seems to be needed still?

[Gargron]

--deployment means "without development" FYI

If you're installing freshly for development, simply run bundle install without flags. If installing for production, use --deployment, but then you don't need development.

Mind that bundler remembers your settings so then you can just run bundle and it updates with the same settings.