我在布局中包含了一个js（jquery.simulate），并在development.rb中声明为预编译。但是当我尝试运行rails app时，它突然出现了这个错误：ActionController::UnknownFormat: ActionController::UnknownFormat.
以下是完整的跟踪：
开始GET＆＃34; /users/sign_in.js"对于127.0.0.1在2017-07-07 12:24:18 + 0530E，[2017-07-07T12：24：18.699146＃31265]错误 - 哨兵：** [乌鸦]由于先前的失败而没有发送事件（s ）。
E，[2017-07-07T12：24：18.699306＃31265] ERROR - 哨兵：** [Raven]无法提交事件：ActionController :: UnknownFormat：ActionController :: UnknownFormat
2017-07-07 12:24:18 +0530严重性=致命，2017-07-07 12:24:18 +0530严重性=致命，ActionController :: UnknownFormat（ActionController :: UnknownFormat）：2017-07-07 12： 24:18 +0530严重性=致命，2017-07-07 12:24:18 +0530严重性=致命，响应者（2.3.0）lib / action_controller / respond_with.rb：207：respond_with'
devise (4.2.0) app/controllers/devise/sessions_controller.rb:12:in新＆＃39 ;
actionpack（5.0.1）lib / action_controller / metal / basic_implicit_render.rb：4：在send_action'
actionpack (5.0.1) lib/abstract_controller/base.rb:188:in process_action＆＃39;
actionpack（5.0.1）lib / action_controller / metal / rendering.rb：30：在process_action＆＃39;中的process_action'
actionpack (5.0.1) lib/abstract_controller/callbacks.rb:20:in块中
activesupport（5.0.1）lib / active_support / callbacks.rb：126：在call'
activesupport (5.0.1) lib/active_support/callbacks.rb:506:in块中（2级）编译＆＃39;
activesupport（5.0.1）lib / active_support / callbacks.rb:455：在call'
activesupport (5.0.1) lib/active_support/callbacks.rb:101:in run_callbacks ＆＃39;
activesupport（5.0.1）lib / active_support / callbacks.rb：750：在_run_process_action_callbacks'
activesupport (5.0.1) lib/active_support/callbacks.rb:90:in run_callbacks＆＃39;
actionpack（5.0.1）lib / abstract_controller / callbacks.rb：19：在process_action'
actionpack (5.0.1) lib/action_controller/metal/rescue.rb:20:in process_action＆＃39;
actionpack（5.0.1）lib / action_controller / metal / instrumentation.rb：32：在block in process_action'
activesupport (5.0.1) lib/active_support/notifications.rb:164:in块中的仪器＆＃39;
activesupport（5.0.1）lib / active_support / notifications / instrumenter.rb:21:in instrument'
activesupport (5.0.1) lib/active_support/notifications.rb:164:in instrument＆＃39;
actionpack（5.0.1）lib / action_controller / metal / instrumentation.rb：30：在process_action'
actionpack (5.0.1) lib/action_controller/metal/params_wrapper.rb:248:in process_action＆＃39;
activerecord（5.0.1）lib / active_record / railties / controller_runtime.rb:18:in process_action'
actionpack (5.0.1) lib/abstract_controller/base.rb:126:in进程＆＃39;
actionview（5.0.1）lib / action_view / rendering.rb：30：在process'
actionpack (5.0.1) lib/action_controller/metal.rb:190:in发送＆＃39;
actionpack（5.0.1）lib / action_controller / metal.rb：262：在dispatch'
actionpack (5.0.1) lib/action_dispatch/routing/route_set.rb:50:in发送＆＃39;
actionpack（5.0.1）lib / action_dispatch / routing / route_set.rb:32:in serve'
actionpack (5.0.1) lib/action_dispatch/routing/mapper.rb:16:in块中＆＃39;
actionpack（5.0.1）lib / action_dispatch / routing / mapper.rb：46：在serve'
actionpack (5.0.1) lib/action_dispatch/journey/router.rb:39:in块中的服务＆＃39;
actionpack（5.0.1）lib / action_dispatch / journey / router.rb:26:in each'
actionpack (5.0.1) lib/action_dispatch/journey/router.rb:26:in serve＆＃39;
actionpack（5.0.1）lib / action_dispatch / routing / route_set.rb：725：call'
newrelic_rpm (3.18.0.329) lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in来电＆＃39;
apipie-rails（0.3.7）lib / apipie / static_dispatcher.rb:65:in call'
newrelic_rpm (3.18.0.329) lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in call＆＃39;
omniauth（1.3.2）lib / omniauth / strategy.rb：186：在call!'
omniauth (1.3.2) lib/omniauth/strategy.rb:164:in电话＆＃39;
newrelic_rpm（3.18.0.329）lib / new_relic / agent / instrumentation / middleware_tracing.rb:96:in call'
omniauth (1.3.2) lib/omniauth/strategy.rb:186:in来电！＆＃39;
omniauth（1.3.2）lib / omniauth / strategy.rb:164:in call'
newrelic_rpm (3.18.0.329) lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in call＆＃39;
omniauth（1.3.2）lib / omniauth / strategy.rb：186：在call!'
omniauth (1.3.2) lib/omniauth/strategy.rb:164:in电话＆＃39;
newrelic_rpm（3.18.0.329）lib / new_relic / agent / instrumentation / middleware_tracing.rb:96:in call'
omniauth (1.3.2) lib/omniauth/strategy.rb:186:in来电！＆＃39;
omniauth（1.3.2）lib / omniauth / strategy.rb:164:in call'
newrelic_rpm (3.18.0.329) lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in call＆＃39;
omniauth（1.3.2）lib / omniauth / strategy.rb：186：在call!'
omniauth (1.3.2) lib/omniauth/strategy.rb:164:in电话＆＃39;
newrelic_rpm（3.18.0.329）lib / new_relic / agent / instrumentation / middleware_tracing.rb:96:in call'
omniauth (1.3.2) lib/omniauth/strategy.rb:186:in来电！＆＃39;
omniauth（1.3.2）lib / omniauth / strategy.rb:164:in call'
newrelic_rpm (3.18.0.329) lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in call＆＃39;
bullet（5.5.0）lib / bullet / rack.rb:12:in call'
newrelic_rpm (3.18.0.329) lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in call＆＃39;
apipie-rails（0.3.7）lib / apipie / extractor / recorder.rb：132：在call'
newrelic_rpm (3.18.0.329) lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in电话＆＃39;
jquery-fileupload-rails（0.4.7）lib / jquery / fileupload / rails / middleware.rb:14:in _call'
jquery-fileupload-rails (0.4.7) lib/jquery/fileupload/rails/middleware.rb:10:in call＆＃39;
newrelic_rpm（3.18.0.329）lib / new_relic / agent / instrumentation / middleware_tracing.rb:96:in call'
newrelic_rpm (3.18.0.329) lib/new_relic/rack/agent_hooks.rb:30:in traced_call＆＃39;
newrelic_rpm（3.18.0.329）lib / new_relic / agent / instrumentation / middleware_tracing.rb:96:in call'
newrelic_rpm (3.18.0.329) lib/new_relic/rack/browser_monitoring.rb:32:in traced_call＆＃39;
newrelic_rpm（3.18.0.329）lib / new_relic / agent / instrumentation / middleware_tracing.rb:96:in call'
omniauth (1.3.2) lib/omniauth/strategy.rb:403:in call_app！＆＃39;
omniauth-saml（1.7.0）lib / omniauth / strategies / saml.rb：135：other_phase'
omniauth (1.3.2) lib/omniauth/strategy.rb:185:in电话！＆＃39;
omniauth（1.3.2）lib / omniauth / strategy.rb:164:in call'
newrelic_rpm (3.18.0.329) lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in call＆＃39;
omniauth（1.3.2）lib / omniauth / builder.rb:63:in call'
newrelic_rpm (3.18.0.329) lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in call＆＃39;
warden（1.2.7）lib / warden / manager.rb:36:in block in call'
warden (1.2.7) lib/warden/manager.rb:35:in catch＆＃39;
warden（1.2.7）lib / warden / manager.rb:35:in call'
newrelic_rpm (3.18.0.329) lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in来电＆＃39;
rack（2.0.1）lib / rack / etag.rb:25:in call'
newrelic_rpm (3.18.0.329) lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in call＆＃39;
rack（2.0.1）lib / rack / conditional_get.rb:25:in call'
newrelic_rpm (3.18.0.329) lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in call＆＃39;
rack（2.0.1）lib / rack / head.rb:12:in call'
newrelic_rpm (3.18.0.329) lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in call＆＃39;
rack（2.0.1）lib / rack / session / abstract / id.rb:222:in context'
rack (2.0.1) lib/rack/session/abstract/id.rb:216:in call＆＃39;
newrelic_rpm（3.18.0.329）lib / new_relic / agent / instrumentation / middleware_tracing.rb:96:in call'
actionpack (5.0.1) lib/action_dispatch/middleware/cookies.rb:613:in call＆＃39;
newrelic_rpm（3.18.0.329）lib / new_relic / agent / instrumentation / middleware_tracing.rb:96:in call'
activerecord (5.0.1) lib/active_record/migration.rb:553:in call＆＃39;
newrelic_rpm（3.18.0.329）lib / new_relic / agent / instrumentation / middleware_tracing.rb:96:in call'
actionpack (5.0.1) lib/action_dispatch/middleware/callbacks.rb:38:in阻止通话＆＃39;
activesupport（5.0.1）lib / active_support / callbacks.rb:97:in __run_callbacks__'
activesupport (5.0.1) lib/active_support/callbacks.rb:750:in _ run_call_callbacks＆＃39;
activesupport（5.0.1）lib / active_support / callbacks.rb:90:in run_callbacks'
actionpack (5.0.1) lib/action_dispatch/middleware/callbacks.rb:36:in call＆＃39;
newrelic_rpm（3.18.0.329）lib / new_relic / agent / instrumentation / middleware_tracing.rb:96:in call'
actionpack (5.0.1) lib/action_dispatch/middleware/executor.rb:12:in call＆＃39;
newrelic_rpm（3.18.0.329）lib / new_relic / agent / instrumentation / middleware_tracing.rb:96:in call'
actionpack (5.0.1) lib/action_dispatch/middleware/remote_ip.rb:79:in call＆＃39;
newrelic_rpm（3.18.0.329）lib / new_relic / agent / instrumentation / middleware_tracing.rb:96:in call'
actionpack (5.0.1) lib/action_dispatch/middleware/debug_exceptions.rb:49:in call＆＃39;
newrelic_rpm（3.18.0.329）lib / new_relic / agent / instrumentation / middleware_tracing.rb:96:in call'
actionpack (5.0.1) lib/action_dispatch/middleware/show_exceptions.rb:31:in call＆＃39;
newrelic_rpm（3.18.0.329）lib / new_relic / agent / instrumentation / middleware_tracing.rb:96:in call'
railties (5.0.1) lib/rails/rack/logger.rb:36:in call_app＆＃39;
railties（5.0.1）lib / rails / rack / logger.rb:26:in call'
newrelic_rpm (3.18.0.329) lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in来电＆＃39;
sprockets-rails（3.2.0）lib / sprockets / rails / quiet_assets.rb:13:in call'
newrelic_rpm (3.18.0.329) lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in call＆＃39;
request_store（1.3.2）lib / request_store / middleware.rb:9:in call'
newrelic_rpm (3.18.0.329) lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in call＆＃39;
actionpack（5.0.1）lib / action_dispatch / middleware / request_id.rb:24:in call'
newrelic_rpm (3.18.0.329) lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in call＆＃39;
rack（2.0.1）lib / rack / method_override.rb:22:in call'
newrelic_rpm (3.18.0.329) lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in call＆＃39;
rack（2.0.1）lib / rack / runtime.rb:22:in call'
newrelic_rpm (3.18.0.329) lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in call＆＃39;
activesupport（5.0.1）lib / active_support / cache / strategy / local_cache_middleware.rb:28:in call'
newrelic_rpm (3.18.0.329) lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in call＆＃39;
actionpack（5.0.1）lib / action_dispatch / middleware / executor.rb:12:in call'
newrelic_rpm (3.18.0.329) lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in call＆＃39;
actionpack（5.0.1）lib / action_dispatch / middleware / static.rb：136：call'
newrelic_rpm (3.18.0.329) lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in来电＆＃39;
rack（2.0.1）lib / rack / sendfile.rb:111：在call'
newrelic_rpm (3.18.0.329) lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in电话＆＃39;
rack-cors（0.4.1）lib / rack / cors.rb:81:in call'
newrelic_rpm (3.18.0.329) lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in call＆＃39;
sentry-raven（2.3.0）lib / raven / integrations / rack.rb:50:in call'
newrelic_rpm (3.18.0.329) lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in来电＆＃39;
railties（5.0.1）lib / rails / engine.rb：522：在call'
newrelic_rpm (3.18.0.329) lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in电话＆＃39;
rack（2.0.1）lib / rack / deflater.rb:35:in call'
newrelic_rpm (3.18.0.329) lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in来电＆＃39;
puma（3.7.0）lib / puma / configuration.rb：226：在call'
puma (3.7.0) lib/puma/server.rb:578:in handle_request＆＃39;
puma（3.7.0）lib / puma / server.rb:415：在process_client'
puma (3.7.0) lib/puma/server.rb:275:in块中运行＆＃39;