No CodeRay::Scanners plugin for "scanner"

[Casara]

2.3.0 :016 > CodeRay::Scanners.list.collect { |l| CodeRay::Scanners[l].title }
CodeRay::PluginHost::PluginNotFound: No CodeRay::Scanners plugin for "scanner" found in /usr/local/rvm/gems/ruby-2.3.0@avadev/gems/coderay-1.1.1/lib/coderay/scanners/scanner.rb.
    from /usr/local/rvm/gems/ruby-2.3.0@avadev/gems/coderay-1.1.1/lib/coderay/helpers/plugin_host.rb:189:in `block in make_plugin_hash'
    from /usr/local/rvm/gems/ruby-2.3.0@avadev/gems/coderay-1.1.1/lib/coderay/helpers/plugin_host.rb:52:in `[]'
    from /usr/local/rvm/gems/ruby-2.3.0@avadev/gems/coderay-1.1.1/lib/coderay/helpers/plugin_host.rb:52:in `[]'
    from (irb):16:in `block in irb_binding'
    from (irb):16:in `collect'
    from (irb):16
    from /usr/local/rvm/gems/ruby-2.3.0@avadev/gems/railties-4.2.5.1/lib/rails/commands/console.rb:110:in `start'
    from /usr/local/rvm/gems/ruby-2.3.0@avadev/gems/railties-4.2.5.1/lib/rails/commands/console.rb:9:in `start'
    from /usr/local/rvm/gems/ruby-2.3.0@avadev/gems/railties-4.2.5.1/lib/rails/commands/commands_tasks.rb:68:in `console'
    from /usr/local/rvm/gems/ruby-2.3.0@avadev/gems/railties-4.2.5.1/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
    from /usr/local/rvm/gems/ruby-2.3.0@avadev/gems/railties-4.2.5.1/lib/rails/commands.rb:17:in `<top (required)>'
    from /usr/local/rvm/gems/ruby-2.3.0@avadev/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:274:in `require'
    from /usr/local/rvm/gems/ruby-2.3.0@avadev/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:274:in `block in require'
    from /usr/local/rvm/gems/ruby-2.3.0@avadev/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:240:in `load_dependency'
    from /usr/local/rvm/gems/ruby-2.3.0@avadev/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:274:in `require'
    from /projects/neo/avadev/bin/rails:8:in `<top (required)>'
    from /usr/local/rvm/gems/ruby-2.3.0@avadev/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:268:in `load'
    from /usr/local/rvm/gems/ruby-2.3.0@avadev/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:268:in `block in load'
    from /usr/local/rvm/gems/ruby-2.3.0@avadev/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:240:in `load_dependency'
    from /usr/local/rvm/gems/ruby-2.3.0@avadev/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:268:in `load'
    from /usr/local/rvm/rubies/ruby-2.3.0/lib/ruby/site_ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /usr/local/rvm/rubies/ruby-2.3.0/lib/ruby/site_ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'
    from -e:1:in `<main>'2.3.0 :017 >

The symbol :scanner regarding the base class for all scanners is included in the list, see:

> CodeRay::Scanners.list
 => [:json, :ruby, :raydebug, :delphi, :java_script, :xml, :php, :text, :sass, :haml, :lua, :debug, :clojure, :yaml, :taskpaper, :python, :diff, :groovy, :html, :erb, :css, :java, :sql, :scanner, :c, :cpp, :go]