Uninitialized constant Rackup::Handler::Rack (NameError) [Rack 3] #2508
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Are you sure this is a bug in Passenger?
Yes, i sure this from Passenger.
Please try with the newest version of Passenger to avoid issues that have already been fixed
My Gemfile has already pointing to the latest Passenger gem
Question 1: What is the problem?
I actually install this gem to my fresh Rails application, since i wanna change it's default development Web Server from Puma to Passenger. rails s, passenger start, or rails c command return this error:
Rack::Handler is deprecated and replaced by Rackup::Handler
/home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/passenger-6.0.18/src/ruby_supportlib/phusion_passenger/rack_handler.rb:96: warning: Calling Rackup::Handler.register with a string is deprecated, use the class/module itself.
/home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/rackup-2.1.0/lib/rackup/handler.rb:22:in `const_get': uninitialized constant Rackup::Handler::Rack (NameError)
klass = self.const_get(klass, false)
^^^^^^^^^^
Did you mean? Racc
from /home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/rackup-2.1.0/lib/rackup/handler.rb:22:in `register'
from /home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/passenger-6.0.18/src/ruby_supportlib/phusion_passenger/rack_handler.rb:96:in `<module:Handler>'
from /home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/passenger-6.0.18/src/ruby_supportlib/phusion_passenger/rack_handler.rb:40:in `<module:Rack>'
from /home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/passenger-6.0.18/src/ruby_supportlib/phusion_passenger/rack_handler.rb:39:in `<main>'
from <internal:/home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:37:in `require'
from <internal:/home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:37:in `require'
from /home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/bootsnap-1.17.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:32:in `require'
from /home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/zeitwerk-2.6.12/lib/zeitwerk/kernel.rb:38:in `require'
from /home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/bundler-2.4.21/lib/bundler/runtime.rb:60:in `block (2 levels) in require'
from /home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/bundler-2.4.21/lib/bundler/runtime.rb:55:in `each'
from /home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/bundler-2.4.21/lib/bundler/runtime.rb:55:in `block in require'
from /home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/bundler-2.4.21/lib/bundler/runtime.rb:44:in `each'
from /home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/bundler-2.4.21/lib/bundler/runtime.rb:44:in `require'
from /home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/bundler-2.4.21/lib/bundler.rb:187:in `require'
from /home/kaanoy/app/config/application.rb:7:in `<main>'
from <internal:/home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:37:in `require'
from <internal:/home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:37:in `require'
from /home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/bootsnap-1.17.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:32:in `require'
from /home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/railties-7.1.1/lib/rails/commands/server/server_command.rb:139:in `block in perform'
from <internal:kernel>:90:in `tap'
from /home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/railties-7.1.1/lib/rails/commands/server/server_command.rb:136:in `perform'
from /home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/thor-1.3.0/lib/thor/command.rb:28:in `run'
from /home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/thor-1.3.0/lib/thor/invocation.rb:127:in `invoke_command'
from /home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/railties-7.1.1/lib/rails/command/base.rb:178:in `invoke_command'
from /home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/thor-1.3.0/lib/thor.rb:527:in `dispatch'
from /home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/railties-7.1.1/lib/rails/command/base.rb:73:in `perform'
from /home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/railties-7.1.1/lib/rails/command.rb:71:in `block in invoke'
from /home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/railties-7.1.1/lib/rails/command.rb:149:in `with_argv'
from /home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/railties-7.1.1/lib/rails/command.rb:69:in `invoke'
from /home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/railties-7.1.1/lib/rails/commands.rb:18:in `<main>'
from <internal:/home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:37:in `require'
from <internal:/home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:37:in `require'
from /home/kaanoy/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/bootsnap-1.17.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:32:in `require'
from bin/rails:4:in `<main>'Question 2: Passenger version and integration mode:
Passenger Gem v6.0.18 Standalone
Question 3: OS or Linux distro, platform (including version):
WSL2 Linux (Ubuntu-22.04)
Question 4: Passenger installation method:
- RubyGems + Gemfile
- RubyGems, no Gemfile
- Phusion APT repo
- Phusion YUM repo
- OS X Homebrew
- source tarball
- Other, please specify:
Question 5: Your app's programming language (including any version managers) and framework (including versions):
- Rbenv 1.2.0-70-g4fec76f
- Ruby 3.2.2
- Rails 7.1.1
- Bundler v2.4.21
Question 6: Are you using a PaaS and/or containerization? If so which one?
No
Question 7: Anything else about your setup that we should know?
Nope.
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