Error running in Rails 5.1.2

[mattlindsey]

'bundle install' works with latest polyamorous gem, but running gives following error:

mattlindsey@MATTs-MBP WebsiteOne (1737_rails_5) $ bundle exec cucumber features
[Coveralls] Using SimpleCov's 'rails' settings.
There was an error while trying to load the gem 'polyamorous'.
Gem Load Error is: undefined method `alias_method_chain' for ActiveRecord::Associations::JoinDependency:Class
Did you mean?  alias_method
Backtrace for gem load error is:
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/polyamorous-1.2.0/lib/polyamorous/activerecord_3_and_4.0_ruby_1.9/join_dependency.rb:6:in `block in included'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/polyamorous-1.2.0/lib/polyamorous/activerecord_3_and_4.0_ruby_1.9/join_dependency.rb:5:in `class_eval'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/polyamorous-1.2.0/lib/polyamorous/activerecord_3_and_4.0_ruby_1.9/join_dependency.rb:5:in `included'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/polyamorous-1.2.0/lib/polyamorous.rb:51:in `include'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/polyamorous-1.2.0/lib/polyamorous.rb:51:in `<top (required)>'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/bundler-1.15.2/lib/bundler/runtime.rb:82:in `require'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/bundler-1.15.2/lib/bundler/runtime.rb:82:in `block (2 levels) in require'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/bundler-1.15.2/lib/bundler/runtime.rb:77:in `each'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/bundler-1.15.2/lib/bundler/runtime.rb:77:in `block in require'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/bundler-1.15.2/lib/bundler/runtime.rb:66:in `each'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/bundler-1.15.2/lib/bundler/runtime.rb:66:in `require'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/bundler-1.15.2/lib/bundler.rb:108:in `require'
/Users/mattlindsey/Documents/github/WebsiteOne/config/application.rb:7:in `<top (required)>'
/Users/mattlindsey/Documents/github/WebsiteOne/config/environment.rb:2:in `require'
/Users/mattlindsey/Documents/github/WebsiteOne/config/environment.rb:2:in `<top (required)>'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/cucumber-rails-1.5.0/lib/cucumber/rails.rb:7:in `require'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/cucumber-rails-1.5.0/lib/cucumber/rails.rb:7:in `<top (required)>'
/Users/mattlindsey/Documents/github/WebsiteOne/features/support/env.rb:9:in `require'
/Users/mattlindsey/Documents/github/WebsiteOne/features/support/env.rb:9:in `<top (required)>'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/cucumber-2.4.0/lib/cucumber/rb_support/rb_language.rb:96:in `load'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/cucumber-2.4.0/lib/cucumber/rb_support/rb_language.rb:96:in `load_code_file'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/cucumber-2.4.0/lib/cucumber/runtime/support_code.rb:142:in `load_file'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/cucumber-2.4.0/lib/cucumber/runtime/support_code.rb:84:in `block in load_files!'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/cucumber-2.4.0/lib/cucumber/runtime/support_code.rb:83:in `each'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/cucumber-2.4.0/lib/cucumber/runtime/support_code.rb:83:in `load_files!'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/cucumber-2.4.0/lib/cucumber/runtime.rb:253:in `load_step_definitions'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/cucumber-2.4.0/lib/cucumber/runtime.rb:61:in `run!'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/cucumber-2.4.0/lib/cucumber/cli/main.rb:32:in `execute!'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/cucumber-2.4.0/bin/cucumber:8:in `<top (required)>'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/bin/cucumber:22:in `load'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/bin/cucumber:22:in `<main>'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/bin/ruby_executable_hooks:15:in `eval'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/bin/ruby_executable_hooks:15:in `<main>'
Bundler Error Backtrace:
 (Bundler::GemRequireError)
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/bundler-1.15.2/lib/bundler/runtime.rb:85:in `rescue in block (2 levels) in require'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/bundler-1.15.2/lib/bundler/runtime.rb:81:in `block (2 levels) in require'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/bundler-1.15.2/lib/bundler/runtime.rb:77:in `each'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/bundler-1.15.2/lib/bundler/runtime.rb:77:in `block in require'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/bundler-1.15.2/lib/bundler/runtime.rb:66:in `each'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/bundler-1.15.2/lib/bundler/runtime.rb:66:in `require'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/bundler-1.15.2/lib/bundler.rb:108:in `require'
/Users/mattlindsey/Documents/github/WebsiteOne/config/application.rb:7:in `<top (required)>'
/Users/mattlindsey/Documents/github/WebsiteOne/config/environment.rb:2:in `require'
/Users/mattlindsey/Documents/github/WebsiteOne/config/environment.rb:2:in `<top (required)>'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/cucumber-rails-1.5.0/lib/cucumber/rails.rb:7:in `require'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/cucumber-rails-1.5.0/lib/cucumber/rails.rb:7:in `<top (required)>'
/Users/mattlindsey/Documents/github/WebsiteOne/features/support/env.rb:9:in `require'
/Users/mattlindsey/Documents/github/WebsiteOne/features/support/env.rb:9:in `<top (required)>'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/cucumber-2.4.0/lib/cucumber/rb_support/rb_language.rb:96:in `load'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/cucumber-2.4.0/lib/cucumber/rb_support/rb_language.rb:96:in `load_code_file'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/cucumber-2.4.0/lib/cucumber/runtime/support_code.rb:142:in `load_file'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/cucumber-2.4.0/lib/cucumber/runtime/support_code.rb:84:in `block in load_files!'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/cucumber-2.4.0/lib/cucumber/runtime/support_code.rb:83:in `each'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/cucumber-2.4.0/lib/cucumber/runtime/support_code.rb:83:in `load_files!'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/cucumber-2.4.0/lib/cucumber/runtime.rb:253:in `load_step_definitions'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/cucumber-2.4.0/lib/cucumber/runtime.rb:61:in `run!'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/cucumber-2.4.0/lib/cucumber/cli/main.rb:32:in `execute!'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/gems/cucumber-2.4.0/bin/cucumber:8:in `<top (required)>'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/bin/cucumber:22:in `load'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/bin/cucumber:22:in `<main>'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/bin/ruby_executable_hooks:15:in `eval'
/Users/mattlindsey/.rvm/gems/ruby-2.3.1/bin/ruby_executable_hooks:15:in `<main>'

[mattlindsey]

Perhaps this is issue?
http://blog.bigbinary.com/2016/08/21/rails-5-deprecates-alias-method-chain.html

[deodad]

Was having this same issue but realized this gem has been deprecated and merged into Ransack. If you are using Ransack an update to the latest release will fix this.