Rails：无法加载UTF8Handler的Unicode表
我正在使用新的Ubuntu 17.10机器，安装了RVM的Ruby 2.2.3，我正在尝试运行Rails 4.2应用程序。
在rails s命令之后，我得到：
davide@davidell:~/app/app-backend$ rails s Array values in the parameter to `Gem.paths=` are deprecated. Please use a String or nil. An Array ({"GEM_PATH"=>["/home/davide/.rvm/gems/ruby-2.2.3@app", "/home/davide/.rvm/gems/ruby-2.2.3@global"]}) was passed in from bin/rails:3:in `load' => Booting Puma => Rails 4.2.4 application starting in development on http://localhost:3000 => Run `rails server -h` for more startup options => Ctrl-C to shutdown server Exiting /home/davide/.rvm/gems/ruby-2.2.3@app/gems/activesupport-4.2.4/lib/active_support/multibyte/unicode.rb:338:in `rescue in load': Couldn't load the Unicode tables for UTF8Handler (undefined method `getbyte' for false:FalseClass), ActiveSupport::Multibyte is unusable (IOError) from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/activesupport-4.2.4/lib/active_support/multibyte/unicode.rb:335:in `load' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/activesupport-4.2.4/lib/active_support/multibyte/unicode.rb:326:in `codepoints' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/activesupport-4.2.4/lib/active_support/multibyte/unicode.rb:147:in `block in decompose' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/activesupport-4.2.4/lib/active_support/multibyte/unicode.rb:136:in `each' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/activesupport-4.2.4/lib/active_support/multibyte/unicode.rb:136:in `inject' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/activesupport-4.2.4/lib/active_support/multibyte/unicode.rb:136:in `decompose' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/activesupport-4.2.4/lib/active_support/multibyte/unicode.rb:270:in `normalize' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/activesupport-4.2.4/lib/active_support/inflector/transliterate.rb:62:in `transliterate' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/activesupport-4.2.4/lib/active_support/inflector/transliterate.rb:83:in `parameterize' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/activesupport-4.2.4/lib/active_support/core_ext/string/inflections.rb:168:in `parameterize' from /home/davide/.rvm/gems/ruby-2.2.3@app/bundler/gems/activeadmin-893b46c6530c/lib/active_admin/scope.rb:35:in `initialize' from /home/davide/.rvm/gems/ruby-2.2.3@app/bundler/gems/activeadmin-893b46c6530c/lib/active_admin/resource/scopes.rb:34:in `new' from /home/davide/.rvm/gems/ruby-2.2.3@app/bundler/gems/activeadmin-893b46c6530c/lib/active_admin/resource/scopes.rb:34:in `scope' from /home/davide/.rvm/gems/ruby-2.2.3@app/bundler/gems/activeadmin-893b46c6530c/lib/active_admin/resource_dsl.rb:22:in `scope' from /home/davide/app/app-backend/app/admin/venue.rb:28:in `block in ' from /home/davide/.rvm/gems/ruby-2.2.3@app/bundler/gems/activeadmin-893b46c6530c/lib/active_admin/dsl.rb:15:in `instance_exec' from /home/davide/.rvm/gems/ruby-2.2.3@app/bundler/gems/activeadmin-893b46c6530c/lib/active_admin/dsl.rb:15:in `run_registration_block' from /home/davide/.rvm/gems/ruby-2.2.3@app/bundler/gems/activeadmin-893b46c6530c/lib/active_admin/namespace.rb:223:in `parse_registration_block' from /home/davide/.rvm/gems/ruby-2.2.3@app/bundler/gems/activeadmin-893b46c6530c/lib/active_admin/namespace.rb:48:in `register' from /home/davide/.rvm/gems/ruby-2.2.3@app/bundler/gems/activeadmin-893b46c6530c/lib/active_admin/application.rb:151:in `register' from /home/davide/.rvm/gems/ruby-2.2.3@app/bundler/gems/activeadmin-893b46c6530c/lib/active_admin.rb:75:in `register' from /home/davide/app/app-backend/app/admin/venue.rb:1:in `' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:268:in `load' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:268:in `block in load' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:240:in `load_dependency' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:268:in `load' from /home/davide/.rvm/gems/ruby-2.2.3@app/bundler/gems/activeadmin-893b46c6530c/lib/active_admin/application.rb:209:in `block in load' from /home/davide/.rvm/gems/ruby-2.2.3@app/bundler/gems/activeadmin-893b46c6530c/lib/active_admin/error.rb:41:in `capture' from /home/davide/.rvm/gems/ruby-2.2.3@app/bundler/gems/activeadmin-893b46c6530c/lib/active_admin/application.rb:209:in `load' from /home/davide/.rvm/gems/ruby-2.2.3@app/bundler/gems/activeadmin-893b46c6530c/lib/active_admin/application.rb:201:in `block in load!' from /home/davide/.rvm/gems/ruby-2.2.3@app/bundler/gems/activeadmin-893b46c6530c/lib/active_admin/application.rb:201:in `each' from /home/davide/.rvm/gems/ruby-2.2.3@app/bundler/gems/activeadmin-893b46c6530c/lib/active_admin/application.rb:201:in `load!' from /home/davide/.rvm/gems/ruby-2.2.3@app/bundler/gems/activeadmin-893b46c6530c/lib/active_admin/application.rb:223:in `routes' from /home/davide/.rvm/gems/ruby-2.2.3@app/bundler/gems/activeadmin-893b46c6530c/lib/active_admin.rb:79:in `routes' from /home/davide/app/app-backend/config/routes.rb:320:in `block (2 levels) in ' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/actionpack-4.2.4/lib/action_dispatch/routing/mapper.rb:940:in `block in constraints' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/actionpack-4.2.4/lib/action_dispatch/routing/mapper.rb:816:in `scope' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/actionpack-4.2.4/lib/action_dispatch/routing/mapper.rb:940:in `constraints' from /home/davide/app/app-backend/config/routes.rb:316:in `block in ' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/actionpack-4.2.4/lib/action_dispatch/routing/route_set.rb:434:in `instance_exec' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/actionpack-4.2.4/lib/action_dispatch/routing/route_set.rb:434:in `eval_block' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/actionpack-4.2.4/lib/action_dispatch/routing/route_set.rb:412:in `draw' from /home/davide/app/app-backend/config/routes.rb:1:in `' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:268:in `load' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:268:in `block in load' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:240:in `load_dependency' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:268:in `load' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/railties-4.2.4/lib/rails/application/routes_reloader.rb:40:in `block in load_paths' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/railties-4.2.4/lib/rails/application/routes_reloader.rb:40:in `each' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/railties-4.2.4/lib/rails/application/routes_reloader.rb:40:in `load_paths' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/railties-4.2.4/lib/rails/application/routes_reloader.rb:16:in `reload!' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/railties-4.2.4/lib/rails/application/routes_reloader.rb:26:in `block in updater' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/activesupport-4.2.4/lib/active_support/file_update_checker.rb:75:in `call' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/activesupport-4.2.4/lib/active_support/file_update_checker.rb:75:in `execute' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/railties-4.2.4/lib/rails/application/routes_reloader.rb:27:in `updater' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/railties-4.2.4/lib/rails/application/routes_reloader.rb:7:in `execute_if_updated' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/railties-4.2.4/lib/rails/application/finisher.rb:69:in `block in ' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/railties-4.2.4/lib/rails/initializable.rb:30:in `instance_exec' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/railties-4.2.4/lib/rails/initializable.rb:30:in `run' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/railties-4.2.4/lib/rails/initializable.rb:55:in `block in run_initializers' from /usr/share/rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/tsort.rb:226:in `block in tsort_each' from /usr/share/rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/tsort.rb:348:in `block (2 levels) in each_strongly_connected_component' from /usr/share/rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/tsort.rb:429:in `each_strongly_connected_component_from' from /usr/share/rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/tsort.rb:347:in `block in each_strongly_connected_component' from /usr/share/rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/tsort.rb:345:in `each' from /usr/share/rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/tsort.rb:345:in `call' from /usr/share/rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/tsort.rb:345:in `each_strongly_connected_component' from /usr/share/rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/tsort.rb:224:in `tsort_each' from /usr/share/rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/tsort.rb:203:in `tsort_each' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/railties-4.2.4/lib/rails/initializable.rb:54:in `run_initializers' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/railties-4.2.4/lib/rails/application.rb:352:in `initialize!' from /home/davide/app/app-backend/config/environment.rb:5:in `' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:274:in `require' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:274:in `block in require' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:240:in `load_dependency' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:274:in `require' from /home/davide/app/app-backend/config.ru:20:in `block in ' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/rack-1.6.4/lib/rack/builder.rb:55:in `instance_eval' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/rack-1.6.4/lib/rack/builder.rb:55:in `initialize' from /home/davide/app/app-backend/config.ru:in `new' from /home/davide/app/app-backend/config.ru:in `' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/rack-1.6.4/lib/rack/builder.rb:49:in `eval' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/rack-1.6.4/lib/rack/builder.rb:49:in `new_from_string' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/rack-1.6.4/lib/rack/builder.rb:40:in `parse_file' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/rack-1.6.4/lib/rack/server.rb:299:in `build_app_and_options_from_config' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/rack-1.6.4/lib/rack/server.rb:208:in `app' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/railties-4.2.4/lib/rails/commands/server.rb:61:in `app' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/rack-1.6.4/lib/rack/server.rb:336:in `wrapped_app' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/railties-4.2.4/lib/rails/commands/server.rb:139:in `log_to_stdout' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/railties-4.2.4/lib/rails/commands/server.rb:78:in `start' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:80:in `block in server' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:75:in `tap' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:75:in `server' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:39:in `run_command!' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/railties-4.2.4/lib/rails/commands.rb:17:in `' from /home/davide/app/app-backend/bin/rails:8:in `require' from /home/davide/app/app-backend/bin/rails:8:in `' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/spring-1.4.0/lib/spring/client/rails.rb:28:in `load' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/spring-1.4.0/lib/spring/client/rails.rb:28:in `call' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/spring-1.4.0/lib/spring/client/command.rb:7:in `call' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/spring-1.4.0/lib/spring/client.rb:28:in `run' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/spring-1.4.0/bin/spring:49:in `' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/spring-1.4.0/lib/spring/binstub.rb:11:in `load' from /home/davide/.rvm/gems/ruby-2.2.3@app/gems/spring-1.4.0/lib/spring/binstub.rb:11:in `' from /home/davide/app/app-backend/bin/spring:13:in `require' from /home/davide/app/app-backend/bin/spring:13:in `' from bin/rails:3:in `load' from bin/rails:3:in `'
经过几次尝试后，它可以正常运行，但这是一个完全随机的试验次数。 如果我停止应用程序，则会发生相同的错误，并且在其他几次尝试之后，它会起作用。 好随便喔。
现在我得到了：
[NOTE] You may have encountered a bug in the Ruby interpreter or extension libraries. Bug reports are welcome. For details: http://www.ruby-lang.org/bugreport.html