Error 500 tras actualizar a v2026.9.0 / resuelto temporalmente borrando los datos del navegador

[Fabien_1015 (Fabien)]

Hola,

Tenemos un foro de Discourse para el PL de Scala destinado a los usuarios, que funcionaba sin problemas durante años:

Scala Users

La semana pasada actualicé a la última versión usando “./launcher rebuild app”, y desde entonces aparece con mucha frecuencia el error “Oops - Error 500”. Este error se manifiesta cuando el sitio web ya ha sido visitado previamente. En una ventana privada del navegador, funciona correctamente. Por lo tanto, limpiar los datos del sitio web en el navegador soluciona el problema durante un tiempo, pero el error vuelve a aparecer.
Intenté actualizar Discourse dos veces desde el panel de control y luego volví a reconstruirlo usando “./launcher rebuild app”, pero sigue siendo lo mismo.
En log/rails/production.log solo veo:
Started GET "/" for 127.0.0.1 at 2026-09-03 09:57:56 +0000
Processing by ListController#latest as HTML
Rendered layout layouts/application.html.erb (Duration: 391.6ms | GC: 229.5ms)
Completed 500 Internal Server Error in 474ms (Views: 392.5ms | ActiveRecord: 0.0ms (0 queries, 0 cached) | GC: 236.0ms)

¿Tienen alguna idea de qué está fallando y qué podría hacer para resolver el problema?
¡Muchas gracias!

Fabien

[Fabien_1015 (Fabien)]

Al profundizar más, se descubrió que eliminar la cookie _t hace desaparecer el “error 500”, pero el error vuelve a aparecer tras iniciar sesión, probablemente a la hora aproximadamente.

[merefield (Robert)]

v2026.9.0 aún no ha sido lanzado, ¿te refieres a la versión de desarrollo/más reciente?

Discourse Releases

[Fabien_1015 (Fabien)]

No he configurado ninguna versión específica, así que supongo que por defecto debería ser la más reciente (según "tests-passed" is now "latest" ).
En el panel de control, esta es la versión que aparece en la parte inferior.

[merefield (Robert)]

En /logs, ¿puedes encontrar el error 500 y compartir el error y su backtrace?

[Fabien_1015 (Fabien)]

Solo tengo eso en los registros (production.log), nada más en otro lugar:
Started GET "/" for 127.0.0.1 at 2026-09-07 08:05:50 +0000
Processing by ListController#latest as HTML
Rendered layout layouts/application.html.erb (Duration: 164.0ms | GC: 13.5ms)
Completed 500 Internal Server Error in 248ms (Views: 164.7ms | ActiveRecord: 0.0ms (0 queries, 0 cached) | GC: 15.9ms)

No logré encontrar una forma de añadir más depuración.

Por cierto, también intenté usar /safe-mode, pero no cambia nada…

[merefield (Robert)]

Está en la ruta /logs, a menos que esa también falle.

[Fabien_1015 (Fabien)]

Lo siento, estaba revisando los registros del contenedor.
Aquí están:

Mensaje (18 copias reportadas)

PG::InvalidTextRepresentation (ERROR:  invalid input syntax for type inet: "unix:"
LINE 7:     client_ip = 'unix:',
^
)
lib/mini_sql_multisite_connection.rb:109:in 'MiniSqlMultisiteConnection#run'
app/models/user_auth_token.rb:244:in 'UserAuthToken#rotate!'
lib/auth/default_current_user_provider.rb:260:in 'Auth::DefaultCurrentUserProvider#refresh_session'
lib/current_user.rb:52:in 'CurrentUser#refresh_session'
app/controllers/application_controller.rb:91:in 'ApplicationController#perform_refresh_session'
app/controllers/application_controller.rb:444:in 'block in ApplicationController#with_resolved_locale'
app/controllers/application_controller.rb:444:in 'ApplicationController#with_resolved_locale'
app/controllers/application_controller.rb:1126:in 'ApplicationController#ensure_dont_cache_page'
lib/middleware/omniauth_bypass_middleware.rb:35:in 'Middleware::OmniauthBypassMiddleware#call'
lib/middleware/crawler_hooks.rb:13:in 'Middleware::CrawlerHooks#call'
lib/content_security_policy/middleware.rb:12:in 'ContentSecurityPolicy::Middleware#call'
lib/middleware/anonymous_cache.rb:431:in 'Middleware::AnonymousCache#call'
lib/middleware/csp_script_nonce_injector.rb:13:in 'Middleware::CspScriptNonceInjector#call'
lib/middleware/track_view_session_id_injector.rb:12:in 'Middleware::TrackViewSessionIdInjector#call'
config/initializers/008-rack-cors.rb:14:in 'Discourse::Cors#call'
lib/middleware/default_headers.rb:13:in 'Middleware::DefaultHeaders#call'
config/initializers/100-quiet_logger.rb:20:in 'DiscourseRackQuietAssetsLogger#call'
config/initializers/100-silence_logger.rb:29:in 'SilenceLogger#call'
lib/middleware/enforce_hostname.rb:23:in 'Middleware::EnforceHostname#call'
lib/middleware/request_tracker.rb:381:in 'Middleware::RequestTracker#call'
lib/middleware/overload_protections.rb:18:in 'Middleware::OverloadProtections#call'
lib/middleware/processing_request.rb:14:in 'Middleware::ProcessingRequest#call'

Backtrace

rack-mini-profiler (4.0.1) lib/patches/db/pg/alias_method.rb:112:in 'PG::Connection#exec'
rack-mini-profiler (4.0.1) lib/patches/db/pg/alias_method.rb:112:in 'PG::Connection#async_exec'
mini_sql (1.6.0) lib/mini_sql/postgres/connection.rb:217:in 'MiniSql::Postgres::Connection#run'
mini_sql (1.6.0) lib/mini_sql/active_record_postgres/connection.rb:38:in 'block in MiniSql::ActiveRecordPostgres::Connection#run'
mini_sql (1.6.0) lib/mini_sql/active_record_postgres/connection.rb:34:in 'block in MiniSql::ActiveRecordPostgres::Connection#with_lock'
activesupport (8.0.5.1) lib/active_support/concurrency/null_lock.rb:9:in 'ActiveSupport::Concurrency::NullLock#synchronize'
mini_sql (1.6.0) lib/mini_sql/active_record_postgres/connection.rb:34:in 'MiniSql::ActiveRecordPostgres::Connection#with_lock'
mini_sql (1.6.0) lib/mini_sql/active_record_postgres/connection.rb:38:in 'MiniSql::ActiveRecordPostgres::Connection#run'
lib/mini_sql_multisite_connection.rb:109:in 'MiniSqlMultisiteConnection#run'
mini_sql (1.6.0) lib/mini_sql/postgres/connection.rb:196:in 'MiniSql::Postgres::Connection#exec'
app/models/user_auth_token.rb:244:in 'UserAuthToken#rotate!'
lib/auth/default_current_user_provider.rb:260:in 'Auth::DefaultCurrentUserProvider#refresh_session'
lib/current_user.rb:52:in 'CurrentUser#refresh_session'
app/controllers/application_controller.rb:91:in 'ApplicationController#perform_refresh_session'
activesupport (8.0.5.1) lib/active_support/callbacks.rb:361:in 'block in ActiveSupport::Callbacks::CallTemplate::MethodCall#make_lambda'
activesupport (8.0.5.1) lib/active_support/callbacks.rb:207:in 'ActiveSupport::Callbacks::Filters::After#call'
activesupport (8.0.5.1) lib/active_support/callbacks.rb:563:in 'block in ActiveSupport::Callbacks::CallbackSequence#invoke_after'
activesupport (8.0.5.1) lib/active_support/callbacks.rb:563:in 'Array#each'
activesupport (8.0.5.1) lib/active_support/callbacks.rb:563:in 'ActiveSupport::Callbacks::CallbackSequence#invoke_after'
activesupport (8.0.5.1) lib/active_support/callbacks.rb:134:in 'block in ActiveSupport::Callbacks#run_callbacks'
app/controllers/application_controller.rb:444:in 'block in ApplicationController#with_resolved_locale'
i18n (1.15.2) lib/i18n.rb:383:in 'I18n::Base#with_locale'
app/controllers/application_controller.rb:444:in 'ApplicationController#with_resolved_locale'
activesupport (8.0.5.1) lib/active_support/callbacks.rb:129:in 'block in ActiveSupport::Callbacks#run_callbacks'
app/controllers/application_controller.rb:1126:in 'ApplicationController#ensure_dont_cache_page'
activesupport (8.0.5.1) lib/active_support/callbacks.rb:129:in 'block in ActiveSupport::Callbacks#run_callbacks'
activesupport (8.0.5.1) lib/active_support/callbacks.rb:140:in 'ActiveSupport::Callbacks#run_callbacks'
actionpack (8.0.5.1) lib/abstract_controller/callbacks.rb:260:in 'AbstractController::Callbacks#process_action'
actionpack (8.0.5.1) lib/action_controller/metal/rescue.rb:27:in 'ActionController::Rescue#process_action'
actionpack (8.0.5.1) lib/action_controller/metal/instrumentation.rb:76:in 'block in ActionController::Instrumentation#process_action'
activesupport (8.0.5.1) lib/active_support/notifications.rb:210:in 'block in ActiveSupport::Notifications.instrument'
activesupport (8.0.5.1) lib/active_support/notifications/instrumenter.rb:58:in 'ActiveSupport::Notifications::Instrumenter#instrument'
activesupport (8.0.5.1) lib/active_support/notifications.rb:210:in 'ActiveSupport::Notifications.instrument'
actionpack (8.0.5.1) lib/action_controller/metal/instrumentation.rb:75:in 'ActionController::Instrumentation#process_action'
actionpack (8.0.5.1) lib/action_controller/metal/params_wrapper.rb:259:in 'ActionController::ParamsWrapper#process_action'
activerecord (8.0.5.1) lib/active_record/railties/controller_runtime.rb:39:in 'ActiveRecord::Railties::ControllerRuntime#process_action'
actionpack (8.0.5.1) lib/abstract_controller/base.rb:152:in 'AbstractController::Base#process'
actionview (8.0.5.1) lib/action_view/rendering.rb:40:in 'ActionView::Rendering#process'
rack-mini-profiler (4.0.1) lib/mini_profiler/profiling_methods.rb:116:in 'block in ActionController::Base#profile_method'
actionpack (8.0.5.1) lib/action_controller/metal.rb:252:in 'ActionController::Metal#dispatch'
actionpack (8.0.5.1) lib/action_controller/metal.rb:335:in 'ActionController::Metal.dispatch'
actionpack (8.0.5.1) lib/action_dispatch/routing/route_set.rb:67:in 'ActionDispatch::Routing::RouteSet::Dispatcher#dispatch'
actionpack (8.0.5.1) lib/action_dispatch/routing/route_set.rb:50:in 'ActionDispatch::Routing::RouteSet::Dispatcher#serve'
actionpack (8.0.5.1) lib/action_dispatch/routing/mapper.rb:32:in 'block in class:Constraints'
actionpack (8.0.5.1) lib/action_dispatch/routing/mapper.rb:62:in 'ActionDispatch::Routing::Mapper::Constraints#serve'
actionpack (8.0.5.1) lib/action_dispatch/journey/router.rb:53:in 'block in ActionDispatch::Journey::Router#serve'
actionpack (8.0.5.1) lib/action_dispatch/journey/router.rb:133:in 'block in ActionDispatch::Journey::Router#find_routes'
actionpack (8.0.5.1) lib/action_dispatch/journey/router.rb:126:in 'Array#each'
actionpack (8.0.5.1) lib/action_dispatch/journey/router.rb:126:in 'ActionDispatch::Journey::Router#find_routes'
actionpack (8.0.5.1) lib/action_dispatch/journey/router.rb:34:in 'ActionDispatch::Journey::Router#serve'
actionpack (8.0.5.1) lib/action_dispatch/routing/route_set.rb:908:in 'ActionDispatch::Routing::RouteSet#call'
lib/middleware/omniauth_bypass_middleware.rb:35:in 'Middleware::OmniauthBypassMiddleware#call'
lib/middleware/crawler_hooks.rb:13:in 'Middleware::CrawlerHooks#call'
rack (2.2.24) lib/rack/tempfile_reaper.rb:15:in 'Rack::TempfileReaper#call'
rack (2.2.24) lib/rack/conditional_get.rb:27:in 'Rack::ConditionalGet#call'
rack (2.2.24) lib/rack/head.rb:12:in 'Rack::Head#call'
actionpack (8.0.5.1) lib/action_dispatch/http/permissions_policy.rb:38:in 'ActionDispatch::PermissionsPolicy::Middleware#call'
lib/content_security_policy/middleware.rb:12:in 'ContentSecurityPolicy::Middleware#call'
lib/middleware/anonymous_cache.rb:431:in 'Middleware::AnonymousCache#call'
lib/middleware/csp_script_nonce_injector.rb:13:in 'Middleware::CspScriptNonceInjector#call'
lib/middleware/track_view_session_id_injector.rb:12:in 'Middleware::TrackViewSessionIdInjector#call'
config/initializers/008-rack-cors.rb:14:in 'Discourse::Cors#call'
rack (2.2.24) lib/rack/session/abstract/id.rb:266:in 'Rack::Session::Abstract::Persisted#context'
rack (2.2.24) lib/rack/session/abstract/id.rb:260:in 'Rack::Session::Abstract::Persisted#call'
actionpack (8.0.5.1) lib/action_dispatch/middleware/cookies.rb:706:in 'ActionDispatch::Cookies#call'
actionpack (8.0.5.1) lib/action_dispatch/middleware/callbacks.rb:31:in 'block in ActionDispatch::Callbacks#call'
activesupport (8.0.5.1) lib/active_support/callbacks.rb:100:in 'ActiveSupport::Callbacks#run_callbacks'
actionpack (8.0.5.1) lib/action_dispatch/middleware/callbacks.rb:30:in 'ActionDispatch::Callbacks#call'
actionpack (8.0.5.1) lib/action_dispatch/middleware/debug_exceptions.rb:31:in 'ActionDispatch::DebugExceptions#call'
actionpack (8.0.5.1) lib/action_dispatch/middleware/show_exceptions.rb:32:in 'ActionDispatch::ShowExceptions#call'
logster (2.21.0) lib/logster/middleware/reporter.rb:40:in 'Logster::Middleware::Reporter#call'
lib/middleware/default_headers.rb:13:in 'Middleware::DefaultHeaders#call'
railties (8.0.5.1) lib/rails/rack/logger.rb:41:in 'Rails::Rack::Logger#call_app'
railties (8.0.5.1) lib/rails/rack/logger.rb:29:in 'Rails::Rack::Logger#call'
config/initializers/100-quiet_logger.rb:20:in 'DiscourseRackQuietAssetsLogger#call'
config/initializers/100-silence_logger.rb:29:in 'SilenceLogger#call'
actionpack (8.0.5.1) lib

y

Mensaje (209 copias reportadas)

Job exception: ERROR:  invalid input syntax for type inet: "unix:"
LINE 2: SET ip_address = 'unix:'
^

Backtrace

/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/rack-mini-profiler-4.0.1/lib/patches/db/pg/alias_method.rb:109:in 'PG::Connection#exec'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/rack-mini-profiler-4.0.1/lib/patches/db/pg/alias_method.rb:109:in 'PG::Connection#async_exec'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/mini_sql-1.6.0/lib/mini_sql/postgres/connection.rb:217:in 'MiniSql::Postgres::Connection#run'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/mini_sql-1.6.0/lib/mini_sql/active_record_postgres/connection.rb:38:in 'block in MiniSql::ActiveRecordPostgres::Connection#run'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/mini_sql-1.6.0/lib/mini_sql/active_record_postgres/connection.rb:34:in 'block in MiniSql::ActiveRecordPostgres::Connection#with_lock'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activesupport-8.0.5.1/lib/active_support/concurrency/null_lock.rb:9:in 'ActiveSupport::Concurrency::NullLock#synchronize'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/mini_sql-1.6.0/lib/mini_sql/active_record_postgres/connection.rb:34:in 'MiniSql::ActiveRecordPostgres::Connection#with_lock'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/mini_sql-1.6.0/lib/mini_sql/active_record_postgres/connection.rb:38:in 'MiniSql::ActiveRecordPostgres::Connection#run'
/var/www/discourse/lib/mini_sql_multisite_connection.rb:109:in 'MiniSqlMultisiteConnection#run'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/mini_sql-1.6.0/lib/mini_sql/postgres/connection.rb:196:in 'MiniSql::Postgres::Connection#exec'
/var/www/discourse/app/models/user.rb:1142:in 'User.update_ip_address!'
/var/www/discourse/lib/auth/default_current_user_provider.rb:235:in 'block in Auth::DefaultCurrentUserProvider#current_user'
/var/www/discourse/lib/scheduler/defer.rb:135:in 'block in Scheduler::Deferrable#do_work'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/rails_multisite-9.0.0/lib/rails_multisite/connection_management/null_instance.rb:54:in 'RailsMultisite::ConnectionManagement::NullInstance#with_connection'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/rails_multisite-9.0.0/lib/rails_multisite/connection_management.rb:23:in 'RailsMultisite::ConnectionManagement.with_connection'
/var/www/discourse/lib/scheduler/defer.rb:130:in 'Scheduler::Deferrable#do_work'
/var/www/discourse/lib/scheduler/defer.rb:116:in 'block (2 levels) in Scheduler::Deferrable#start_thread'

[merefield (Robert)]

¿Estás operando algún tipo de proxy? ¿Puedes describir la arquitectura?

Parece que estás intentando pasar la cadena “unix:” al campo ip_address …

Esto podría ser una mala configuración aguas arriba de Discourse.

Se informó un problema similar y se resolvió aquí, relacionado con Caddy:

Uso un socket Unix entre Caddy y Discourse en lugar de TCP, pero de vez en cuando obtengo un error de 'unix:'

@Falco @satonotdead Logré solucionarlo. Esperé bastante tiempo para asegurarme de que estuviera realmente arreglado, y parece que sí. La configuración Discourse se ejecuta en Docker y expone nginx a través de un socket Unix (/var/discourse/shared/standalone/nginx.http.sock). Caddy se encuentra delante de él como proxy inverso y transmite la IP real del cliente a través de X-Real-IP. Hubo que cambiar dos cosas: la configuración de nginx dentro del contenedor y la forma en que ejecuto la recons…

[Fabien_1015 (Fabien)]

¡Muchas gracias por la ayuda!

Tengo exactamente esta configuración:

Instalación de Discourse detrás de un Reverse Proxy usando la instalación recomendada (sostenida)

En esta publicación, te mostraré exactamente cómo ejecutar Discourse detrás de un proxy inverso de Nginx. Aún utilizando los métodos de instalación admitidos. Requisitos: Nombre de dominio válido. Certificado SSL válido. Entradas DNS válidas que apunten al nombre de dominio. Servidor de correo electrónico o proveedor SMTP válido y funcional. Proxy inverso Nginx funcional y capacidad para acceder a la instancia y crear el certificado SSL para su uso posterior. VM o contenedor LxC que pueda eje…

… excepto que faltaba la línea “proxy_set_header X-Real-IP $remote_addr;”.

Así que supongo que podría estar relacionado.
Parece que ahora funciona bien. Haré más pruebas y lo informaré mañana si esto resuelve el problema.
¡Gracias!