我一直在遵循巫术教程，为新的（空白）Rails应用程序构建simple password authentication。除了将erb转换为haml以外，我一直非常关注它。
一切正常，除了测试logout函数时，它抛出一个错误，似乎使Google难堪（见标题）。
应用程序跟踪仅显示
app/controllers/user_sessions_controller.rb:16:in `destroy'
突出显示logout中的user_sessions_controller.rb行：
def destroy
logout
redirect_to(:users, notice: 'Logged out!')
end
我将在下面转储框架跟踪信息（对我来说意义不大），如果您让我知道有什么帮助，很高兴提供更多信息。欢迎提供有关如何调试此类错误的通用建议。
activemodel (5.1.6) lib/active_model/attribute_methods.rb:432:in `method_missing'
sorcery (0.12.0) lib/sorcery/adapters/active_record_adapter.rb:6:in `block in update_attributes'
sorcery (0.12.0) lib/sorcery/adapters/active_record_adapter.rb:5:in `each'
sorcery (0.12.0) lib/sorcery/adapters/active_record_adapter.rb:5:in `update_attributes'
sorcery (0.12.0) lib/sorcery/model/submodules/remember_me.rb:67:in `force_forget_me!'
sorcery (0.12.0) lib/sorcery/model/submodules/remember_me.rb:61:in `forget_me!'
sorcery (0.12.0) lib/sorcery/controller/submodules/remember_me.rb:34:in `forget_me!'
sorcery (0.12.0) lib/sorcery/controller.rb:149:in `block in before_logout!'
sorcery (0.12.0) lib/sorcery/controller.rb:149:in `each'
sorcery (0.12.0) lib/sorcery/controller.rb:149:in `before_logout!'
sorcery (0.12.0) lib/sorcery/controller.rb:69:in `logout'
actionpack (5.1.6) lib/action_controller/metal/basic_implicit_render.rb:4:in `send_action'
actionpack (5.1.6) lib/abstract_controller/base.rb:186:in `process_action'
actionpack (5.1.6) lib/action_controller/metal/rendering.rb:30:in `process_action'
actionpack (5.1.6) lib/abstract_controller/callbacks.rb:20:in `block in process_action'
activesupport (5.1.6) lib/active_support/callbacks.rb:131:in `run_callbacks'
actionpack (5.1.6) lib/abstract_controller/callbacks.rb:19:in `process_action'
actionpack (5.1.6) lib/action_controller/metal/rescue.rb:20:in `process_action'
actionpack (5.1.6) lib/action_controller/metal/instrumentation.rb:32:in `block in process_action'
activesupport (5.1.6) lib/active_support/notifications.rb:166:in `block in instrument'
activesupport (5.1.6) lib/active_support/notifications/instrumenter.rb:21:in `instrument'
activesupport (5.1.6) lib/active_support/notifications.rb:166:in `instrument'
actionpack (5.1.6) lib/action_controller/metal/instrumentation.rb:30:in `process_action'
actionpack (5.1.6) lib/action_controller/metal/params_wrapper.rb:252:in `process_action'
activerecord (5.1.6) lib/active_record/railties/controller_runtime.rb:22:in `process_action'
actionpack (5.1.6) lib/abstract_controller/base.rb:124:in `process'
actionview (5.1.6) lib/action_view/rendering.rb:30:in `process'
actionpack (5.1.6) lib/action_controller/metal.rb:189:in `dispatch'
actionpack (5.1.6) lib/action_controller/metal.rb:253:in `dispatch'
actionpack (5.1.6) lib/action_dispatch/routing/route_set.rb:49:in `dispatch'
actionpack (5.1.6) lib/action_dispatch/routing/route_set.rb:31:in `serve'
actionpack (5.1.6) lib/action_dispatch/journey/router.rb:50:in `block in serve'
actionpack (5.1.6) lib/action_dispatch/journey/router.rb:33:in `each'
actionpack (5.1.6) lib/action_dispatch/journey/router.rb:33:in `serve'
actionpack (5.1.6) lib/action_dispatch/routing/route_set.rb:844:in `call'
rack (2.0.5) lib/rack/etag.rb:25:in `call'
rack (2.0.5) lib/rack/conditional_get.rb:38:in `call'
rack (2.0.5) lib/rack/head.rb:12:in `call'
rack (2.0.5) lib/rack/session/abstract/id.rb:232:in `context'
rack (2.0.5) lib/rack/session/abstract/id.rb:226:in `call'
actionpack (5.1.6) lib/action_dispatch/middleware/cookies.rb:613:in `call'
activerecord (5.1.6) lib/active_record/migration.rb:556:in `call'
actionpack (5.1.6) lib/action_dispatch/middleware/callbacks.rb:26:in `block in call'
activesupport (5.1.6) lib/active_support/callbacks.rb:97:in `run_callbacks'
actionpack (5.1.6) lib/action_dispatch/middleware/callbacks.rb:24:in `call'
actionpack (5.1.6) lib/action_dispatch/middleware/executor.rb:12:in `call'
actionpack (5.1.6) lib/action_dispatch/middleware/debug_exceptions.rb:59:in `call'
web-console (3.6.2) lib/web_console/middleware.rb:135:in `call_app'
web-console (3.6.2) lib/web_console/middleware.rb:22:in `block in call'
web-console (3.6.2) lib/web_console/middleware.rb:20:in `catch'
web-console (3.6.2) lib/web_console/middleware.rb:20:in `call'
actionpack (5.1.6) lib/action_dispatch/middleware/show_exceptions.rb:31:in `call'
railties (5.1.6) lib/rails/rack/logger.rb:36:in `call_app'
railties (5.1.6) lib/rails/rack/logger.rb:24:in `block in call'
activesupport (5.1.6) lib/active_support/tagged_logging.rb:69:in `block in tagged'
activesupport (5.1.6) lib/active_support/tagged_logging.rb:26:in `tagged'
activesupport (5.1.6) lib/active_support/tagged_logging.rb:69:in `tagged'
railties (5.1.6) lib/rails/rack/logger.rb:24:in `call'
sprockets-rails (3.2.1) lib/sprockets/rails/quiet_assets.rb:13:in `call'
actionpack (5.1.6) lib/action_dispatch/middleware/remote_ip.rb:79:in `call'
actionpack (5.1.6) lib/action_dispatch/middleware/request_id.rb:25:in `call'
rack (2.0.5) lib/rack/method_override.rb:22:in `call'
rack (2.0.5) lib/rack/runtime.rb:22:in `call'
activesupport (5.1.6) lib/active_support/cache/strategy/local_cache_middleware.rb:27:in `call'
actionpack (5.1.6) lib/action_dispatch/middleware/executor.rb:12:in `call'
actionpack (5.1.6) lib/action_dispatch/middleware/static.rb:125:in `call'
rack (2.0.5) lib/rack/sendfile.rb:111:in `call'
railties (5.1.6) lib/rails/engine.rb:522:in `call'
puma (3.11.4) lib/puma/configuration.rb:225:in `call'
puma (3.11.4) lib/puma/server.rb:632:in `handle_request'
puma (3.11.4) lib/puma/server.rb:446:in `process_client'
puma (3.11.4) lib/puma/server.rb:306:in `block in run'
puma (3.11.4) lib/puma/thread_pool.rb:120:in `block in spawn_thread'
答案 0 :(得分：0)
重新启动Rails服务器解决了该问题。