Ruby on rails 4 未定义的方法'；游泳池'；对于Sidetiq：：主管：类

我正在开发一个rails应用程序。在运行命令

bundle exec sidekiq

时，我得到以下错误-

undefined method `pool' for Sidetiq::Supervisor:Class
/.rvm/gems/ruby-2.6.3/gems/sidetiq-0.6.0/lib/sidetiq/supervisor.rb:12:in `<class:Supervisor>'
/.rvm/gems/ruby-2.6.3/gems/sidetiq-0.6.0/lib/sidetiq/supervisor.rb:2:in `<module:Sidetiq>'
/.rvm/gems/ruby-2.6.3/gems/sidetiq-0.6.0/lib/sidetiq/supervisor.rb:1:in `<top (required)>'
/.rvm/gems/ruby-2.6.3/gems/activesupport-4.2.11.3/lib/active_support/dependencies.rb:274:in `require'
/.rvm/gems/ruby-2.6.3/gems/activesupport-4.2.11.3/lib/active_support/dependencies.rb:274:in `block in require'
/.rvm/gems/ruby-2.6.3/gems/activesupport-4.2.11.3/lib/active_support/dependencies.rb:240:in `load_dependency'
/.rvm/gems/ruby-2.6.3/gems/activesupport-4.2.11.3/lib/active_support/dependencies.rb:274:in `require'
/.rvm/gems/ruby-2.6.3/gems/sidetiq-0.6.0/lib/sidetiq.rb:32:in `<top (required)>'
/.rvm/gems/ruby-2.6.3/gems/activesupport-4.2.11.3/lib/active_support/dependencies.rb:274:in `require'
/.rvm/gems/ruby-2.6.3/gems/activesupport-4.2.11.3/lib/active_support/dependencies.rb:274:in `block in require'
/.rvm/gems/ruby-2.6.3/gems/activesupport-4.2.11.3/lib/active_support/dependencies.rb:240:in `load_dependency'
/.rvm/gems/ruby-2.6.3/gems/activesupport-4.2.11.3/lib/active_support/dependencies.rb:274:in `require'
/application/engines/common/lib/common/engine.rb:17:in `<top (required)>'
/.rvm/gems/ruby-2.6.3/gems/activesupport-4.2.11.3/lib/active_support/dependencies.rb:274:in `require'
/.rvm/gems/ruby-2.6.3/gems/activesupport-4.2.11.3/lib/active_support/dependencies.rb:274:in `block in require'
/.rvm/gems/ruby-2.6.3/gems/activesupport-4.2.11.3/lib/active_support/dependencies.rb:240:in `load_dependency'
/.rvm/gems/ruby-2.6.3/gems/activesupport-4.2.11.3/lib/active_support/dependencies.rb:274:in `require'
/application/engines/common/lib/common.rb:1:in `<top (required)>'
/.rvm/gems/ruby-2.6.3/gems/bundler-2.2.15/lib/bundler/runtime.rb:66:in `require'
/.rvm/gems/ruby-2.6.3/gems/bundler-2.2.15/lib/bundler/runtime.rb:66:in `block (2 levels) in require'
/.rvm/gems/ruby-2.6.3/gems/bundler-2.2.15/lib/bundler/runtime.rb:61:in `each'
/.rvm/gems/ruby-2.6.3/gems/bundler-2.2.15/lib/bundler/runtime.rb:61:in `block in require'
/.rvm/gems/ruby-2.6.3/gems/bundler-2.2.15/lib/bundler/runtime.rb:50:in `each'
/.rvm/gems/ruby-2.6.3/gems/bundler-2.2.15/lib/bundler/runtime.rb:50:in `require'
/.rvm/gems/ruby-2.6.3/gems/bundler-2.2.15/lib/bundler.rb:173:in `require'
/application/config/application.rb:17:in `<top (required)>'
/.rvm/gems/ruby-2.6.3/gems/sidekiq-4.1.4/lib/sidekiq/cli.rb:232:in `require'
/.rvm/gems/ruby-2.6.3/gems/sidekiq-4.1.4/lib/sidekiq/cli.rb:232:in `boot_system'
/.rvm/gems/ruby-2.6.3/gems/sidekiq-4.1.4/lib/sidekiq/cli.rb:50:in `run'
/.rvm/gems/ruby-2.6.3/gems/sidekiq-4.1.4/bin/sidekiq:12:in `<top (required)>'
/.rvm/gems/ruby-2.6.3/bin/sidekiq:23:in `load'
/.rvm/gems/ruby-2.6.3/bin/sidekiq:23:in `<main>'
/.rvm/gems/ruby-2.6.3/bin/ruby_executable_hooks:22:in `eval'
/.rvm/gems/ruby-2.6.3/bin/ruby_executable_hooks:22:in `<main>'

我无法找出这个错误的根源

有什么宝石是我丢失的吗

有人知道如何解决这个问题吗

---

请帮忙！这很重要

我不知道Sidetiq。然而Sidekiq 4.1.4是从2016年7月开始的，Ruby 2.6.3更新了很多。它们可能彼此不兼容。此外，由于Sidekiq的后续更改，Sidetiq自2017年起不再维护。@Maxence我已更新了Sidekiq版本，但仍然收到相同的错误。Sidetiq自2017年起不再维护，原因是Sidekiq发生了重大更改（请阅读解释中的回购协议）。所以，如果你将Sidekiq更新到最新版本，它肯定会崩溃。最好保持Sidekiq和Sidetiq的原始版本，并尝试使用Ruby 1.9或类似版本运行应用程序

if Sidekiq.server?
      if handler_pool_size = Sidetiq.config.handler_pool_size
        pool Sidetiq::Actor::Handler,
             as: :sidetiq_handler,
             size: handler_pool_size
      else
        # Use Celluloid's CPU-based default.
        pool Sidetiq::Actor::Handler,
             as: :sidetiq_handler
      end
    end